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Until the mid-1970s, academic libraries in the United States responded to the demands for increased stack space by building new facilities or by expanding existing ones. By the late 1970s, with tuition costs rising, college officials began looking for ways to reduce library expenditures. Hoping to avoid construction costs, they asked librarians to look at alternatives to open-shelf storage of library materials. In response, librarians considered the use of microforms and of off-site storage centers, or depositories, for some of the older and less-used library materials in their collections. Although the establishment of depository libraries initially caused controversy on many campuses, the idea of storing and preserving less-used periodicals and books in remote storage centers has grown and received grudging acceptance. This paper looks at the advantages and disadvantages, the economics, and the political issues associated with depository libraries. It considers the influence electronic publishing has had on the storage of paper publications. It also describes a plan developed by Five Colleges, Inc. (Amherst College, Hampshire College, Mount Holyoke College, Smith College, and the University of Massachusetts at Amherst) that calls for deaccessioning duplicates within a jointly administered depository collection.
In the 1970s and 1980s, many librarians saw microforms as an important but partial answer to the need to expand storage space. The purchase of monumental microform sets, such as "Early American Imprints," enabled academic libraries to acquire these important research materials with a minimal investment in shelving space. Newer libraries found that they could acquire complete backruns of important periodicals without having to create thousands of feet of shelving to store them. The U.S. Government began publishing many of its documents on microfiche, and there was a proliferation of scientific and technical reports published on microforms. In addition to its virtue of saving space, the medium received the endorsement of preservationists. Commercial vendors and research libraries microfilmed deteriorating newspapers, the backruns of periodicals, and books printed on paper with high acid content. Efforts were made to preserve deteriorating manuscript collections on microforms. Microforms sometimes became the medium of choice for the preservation of college or university records. Despite their advantages, microforms solved only part of a larger problem. Libraries still needed additional shelving space. Furthermore, most researchers were not enthusiastic about having to use microforms. The quality of the copying on microforms was not always goodpages were sometimes omitted or the material was not always in focus. Microfilming was generally done in black and white, making it difficult to view color and half-tone illustrations. Despite these shortcomings, librarians replaced the original publications with microfilm and discarded the original paper copies. Nicholson Baker (2000) addressed this issue in the July 24, 2000, issue of The New Yorker, and more recently in his book, Double Fold (2001), in which he took librarians to task for having discarded the original volumes of newspapers when they were replaced by microforms. Microforms came in many different formats (for example, microfilm,
microfiche, microprint, and ultrafiche), and each format usually
required its own equipment. The equipment required to view and print
microforms was expensive and difficult to use; it needed frequent
servicing; and parts for older reader/printers were hard to find.
The more elaborate reader/printers were so complicated that patrons
often required staff assistance to use them. Printing from microforms
was often difficult for users. Finally, reading microforms over a
sustained period of time caused physical discomforts such as eye
strain and neck cramps. As a result of such problems, patrons' reactions
to microforms were negative.
Electronic publishing provides a promising answer to the library space problem. The quality of electronic reproductions is usually high, images can easily be produced or reproduced in color, and text and images can be viewed on standard computer monitors and easily printed. Most important, the text and image databases can be stored on a server that is maintained by a manager of database services who is not employed by the library. The library must provide only enough space to house the public access computers and printers. JSTOR and Project MUSE are two notable examples of electronic publishing. William G. Bowen, president of The Andrew W. Mellon Foundation, conceived the idea and promoted the development of JSTOR, as an "effort to ease the increasing problems faced by libraries seeking to provide adequate stack space for the long runs of back files of scholarly journals" (JSTOR 2001). In 1990, JSTOR provided electronic access to the back files of 10 journals and made them available from a database at the University of Michigan and Princeton University to five libraries serving as test sites. Linking high-resolution bitmapped images (600 dpi) of each page to text files generated with optical character recognition software, JSTOR was able to provide for the search and retrieval of the journals' contents (JSTOR 2001). Building on the success of this pilot program, JSTOR expanded its database and offered it to academic libraries with a firm promise that it would remain available indefinitely. Furthermore, JSTOR offered users the important new capability of being able to search the journals singly or in clusters. Faculty in most institutions expressed enthusiasm for JSTOR, but they were still reluctant to give up the paper journals that it duplicated. They saw the advantage of using JSTOR for reference purposes but were reluctant to read extensively from a computer monitor. Although printing long articles was an option, they cited the waste of paper and the time required. Individuals who were interested in color illustrations preferred to see the originals. In short, many faculty members still wanted to be able to see the paper journals. Project MUSE, a collaborative effort by Johns Hopkins University Press and the Milton S. Eisenhower Library at Johns Hopkins University, was supported substantially by The Andrew W. Mellon Foundation and first presented to libraries in early 1995. With the Internet infrastructure firmly in place by that time, Project MUSE was established with a nonproprietary client/server software platform and with access provided by domain Internet Protocol (IP). The concerns of the developers of Project MUSE were to meet the needs of scholars and readers, maintain publication quality, retain the identity of the journal, and make electronic journals affordable (Project MUSE 2001). Current issues of 42 electronic journals were offered initially, and the project made a commitment to offer electronic access to these publications indefinitely. Users had the right to make printed copies within copyright guidelines, and there was no limit to the number of times a journal could be read or printed. Since 1995, Project MUSE has added more than 120 journals from other scholarly publishers to its database, bringing the total number of publications available online to more than 160. Titles cover literature and criticism, history, the visual and performing arts, cultural studies, education, political science, gender studies, and other fields. Many faculty members responded warily to Project MUSE's offerings of current periodicals online. When asked to give up the duplicated paper journal subscriptions, faculty asked for time to evaluate the electronic offerings. Some feared that the commitment to maintain older issues online would not be honored over time; others expressed concern that the publisher might find electronic publication unprofitable and discontinue the service. Faculty members also complained of eye fatigue from prolonged reading of online journals. Librarians checked the commitments of the publishers to continued electronic publications, were reassured by the responses they received, and expressed confidence that Project MUSE would remain in existence. They began cataloging the electronic versions of the Project Muse journals and publicizing their availability, in the hope that more and more library patrons would find and use them.
JSTOR and Project MUSE continue to provide leadership in the development of responsible approaches to electronic publication. They produce high-quality online electronic text of important journals and provide firm guarantees that they will maintain their databases indefinitely. Nonetheless, even with relief from organizations such as JSTOR and Project MUSE, the need to find additional shelving for ever-growing academic library paper collections continues. There are, moreover, few signs that the rate of growth will change substantially in the next few years. The Bowker Annual reports that the total American book title output reached 120,244 in 1998, an increase of 982 titles, or a little less than 1 percent, over 1997 (Ink 2000). Because of a change in the way in which UNESCO collects data on book title output worldwide, the latest data are for 1996. For those countries reporting titles published in both 1994 and 1996, the increase over that two-year period was 10.7 percent (Greco 2000). As early as 1985, John Boll predicted that "[Storage space pressures] will continue until academic libraries turn from storage and delivery and in-house use centers to switching stations that store very little themselves but primarily search electronic supplies and/or central data banks, then sift and winnow the available material for pertinence and quality, and deliverin-house or long distanceselected, individually tailored print-outs of citations and text on demand" (Boll 1985, 15). It may take 5 to 10 years before electronic publication gains sufficient
acceptance worldwide to cause a substantial reduction in the rate
of paper publication. In the meantime, librarians must provide space,
equipment, and staff to make information available in a variety of
formats. For the immediate future, they must find cost-effective
ways to manage their still-growing paper collections.
Studies by Michael Cooper (1991) and others have shown that the number of times an item is circulated influences the cost per volume for storage. Cooper suggests that if a book circulates seven or more times in its lifetime, open-stack storage is cost-effective. An item that circulates fewer than seven times should be considered for compact or off-site storage. With studies such as these in mind, some librarians identified portions of their collections that were less used and moved those volumes into newly installed movable compact shelving. The public still had access to this material, but they were mildly disadvantaged by having to wait for the shelving units to open, or for other library users to vacate already open aisles. The important consideration was that the books were still available on campus. But before long, even with the added capacity provided by compact shelving, space for new books was again exhausted. Administrators and trustees were unrelenting: The libraries could not be expanded. The only remaining solution was to store materials that were unlikely to be requested frequently in off-site facilities.
Faculty and some librarians initially decried the anticipated loss of immediate access to library materials that they had taken for granted as an unwritten condition of their employment. Typical faculty comments, and librarians' responses, were as follows:
BrowsingThe principal concern about an off-site storage facility was that users could not browse the off-site storage center's stacks if it did not have a subject classification arrangement for its books. Faculty fondly recalled instances of having perused "their" section of the library stacks; although arriving with no particular title in mind, they often found the "best" book for their research topic. Such things do happen, and for this reason, browsing is a useful way to test the acceptability of a system imposed through the classification process. Also, picking a book off the shelf and flipping through it is easier, and usually more informative, than is requesting a book through the library's paging system on the basis of its catalog description. Nevertheless, as Boll has observed, subject classification, the basis on which the books in most academic libraries are shelved, has several limiting factors (Boll 1985). First, classification schemes sometimes scatter different aspects of a single topic throughout the classification; the subject cataloger's view of a topic may be broader than the classification schedule allows. In addition, the classification schedule may have been revised since its first use, causing newer books to be separated from older books on the same subject. Finally, the Library of Congress (LC) may have classed the item geographically rather than by precise topic, or have used alphabetical rather than logical subsequences. There are other reasons why the unsuspecting stack visitor stands
a much less than anticipated chance of finding relevant materials
through browsing. For example, the item may be in circulation, on
reserve, in the reference collection, in a branch library, or in
the special collections. If it is a government document, microform,
or map, the document may not be classified at all. Nevertheless,
browsing a section of the stacks is a legitimate and worthwhile way
of supplementing a search for information. Transferring a
portion of a library's collection to an off-site storage center prevents,
or at least discourages, browsing, because even if materials are
arranged in classification order in a storage collection and if patrons
are allowed to use the collection for browsing (as is the case at
Stanford University's Auxiliary Library), they will be much less
likely to take the time and trouble to visit the storage facility
than they would be to visit the stacks on campus.
If library stacks are to be browsable, books of different heights must be shelved together. Such an arrangement causes a space loss of 25 to 35 percent per shelf (Boll 1985, 19). Compact but browsable shelving usually doubles the capacity of a stack area. However, shelving by size, as can be done in a closed-access collection, can triple the storage capacity. Moreover, narrower aisles, as well as deeper and higher compact shelving, can quadruple the capacity of a normal shelving area. The savings are apparent. Two additional factors contribute to cost savings in an off-site storage collection. First, it may be possible to maintain better climate control for the materials being stored (for example, a colder temperature than is practical in stack areas open to users), thus prolonging their life. Second, the increased security of a remote, closed-access collection could reduce the incidence of theft and the associated costs for replacements. On the other side, the substantial effort necessary to identify
and transfer the items to be stored must be considered, as must the
cost of changing online catalog records to indicate the new location
of the material. Since changing the location of serial volumes on
catalog records may cost less than changing the records for individual
books, librarians often begin with the transfer of serials. Using
a "global transfer" to change locations on catalog records
for all books in a given classification can also provide major savings.
Librarians, faculty, and students prefer to have the library materials they need close at hand, where they can readily be found. In the case of little-used items, the benefits of ease of access must be weighed against the costs of maintaining infrequently consulted materials in prime locations on campus. The decision to create an off-site storage center is usually driven by budget concerns. Consequently, it is sometimes made by the president or the board of trustees of a college or university, despite the stated preferences of the director of the library (Paquette 1990). In some cases, a decision to establish an off-site storage center may be influenced by the unexpected availability of suitable space, or by an invitation from a consortium to participate in maintaining and using an off-site storage center. Librarians who realize that their institutions are considering off-site storage sometimes look for available sites or opportunities to cooperate with other institutions with similar needs. And after the decision is made, no matter what position the director of libraries has taken, he or she should have the documentation and statistics necessary to defend the choice to faculty and staff, and should make the documentation available to everyone concerned with the decision.
Having opened its new, six-floor, 120,000-square-foot Robert Frost Library in 1965, Amherst College assumed it would not have to build more library space for many years. When it was dedicated, the Frost Library had about 330,000 volumes. Its shelves were less than one-half filled, and the basement was used for general storage because it was not yet needed for library purposes. However, the library was acquiring approximately 15,000 volumes per year, and the shelves on the top five floors were soon filled. The college was forced to move its general storage area to another building and to install electrically controlled compact shelving in its basement. Because Amherst was among the earliest users of electrically controlled compact shelving, there was concern about its safety. One professor had books paged rather than browsing the stacks, because he was worried about being crushed between the movable shelves. The compact shelving provided twice the book storage space the library could have anticipated for one floor. Nonetheless, by 1989, shelves throughout the building were filled to the point where frequent shifting was required to make room for new volumes. It was apparent that the time had come to plan for the growth of the Frost Library's collections. In November 1989, the president of the college appointed a Library Expansion Committee made up of trustees, faculty, administrators, librarians, and students. "The expansion of the Library is expected to be the single largest and most expensive construction project in the history of the College: at current estimate, its cost will exceed one-third of the annual operating budget . . . ," the president stated. He emphasized that the Library, which is at the heart of much of the educational activity of the College, should be the best of its kind in every area, but that finances are a serious concern and cannot be ignored" (Amherst College 1989). The Library Expansion Committee submitted its report on February 27, 1991. The report requested that 79,000 square feet be added to the current 120,000 square-foot library, and that the 27-year-old building be renovated. The committee also recommended that the trustees engage an architectural firm to outline design options for meeting the library's future needs. Initial estimates, made in the absence of architectural assistance, placed the cost of the expansion and renovation at $26 to $29 million (Amherst College 1991). The cost estimate came as a shock to the president and trustees. In response, in April 1991, the trustees authorized the hiring of an architectural firm, Childs, Bertman, Tseckares, and Casendino of Boston, working with Linea 5 of Cambridge, Massachusetts, to prepare a report on the library's space needs. The architects presented their report to the trustees in January 1992. Confirming earlier projections, the report estimated that it would cost $29 million to expand the library by 79,000 square feet and to renovate the existing structure (Childs Bertman Tseckares Inc., Architects, and Linea 5, Inc., Associated Architects 1992). The board of trustees asked about other needs on campus and put the library project on hold for a year until those needs could be assessed by a newly appointed campus-wide Priorities and Planning Committee, which was cochaired by the dean of faculty and the college treasurer. During the hiatus, the president asked the Library Expansion Committee to scale back the project and to create a program that would cost no more than $12 million. The committee prepared the requested proposal and presented it to the president on November 1, 1992 (Amherst College Library Expansion Committee 1992). Meanwhile, in the summer of 1992, the college treasurer noticed that the Federal Reserve was planning to auction a 44,000-square-foot Strategic Air Command Base it had acquired from the U.S. Air Force. The base, commonly referred to as "the bunker," was located approximately four miles south of Amherst College. A portion of the bunker was built into the side of the Holyoke Range, and the balance was covered with 25 feet of rock and 7 feet of earth. In 1992, Amherst acquired the 26-acre site and the bunker for $510,000, or $11.59 per square foot. Although the College purchased the bunker for general storage purposes, it quickly became apparent that it could be used as an off-site storage center for library materials. In March 1993, the Priorities and Planning Committee recommended that no new square footage be added to any building on campus unless a review of the use of existing facilities had indicated that there were no opportunities for their reuse or adaptation. The committee also recommended that the college begin at once to plan for and to initiate a comprehensive fundraising campaign to meet large capital needs (Amherst College 1993). In response, the trustees instructed the library director to develop a third plan for the renovation and expansion of the library that would include using the bunker as a remote storage area for books. The new plan, prepared by the library director, called for renovating approximately one-third of the bunker as a depository and for transferring about 75,000 volumes, or 10 percent of the general collection and a large portion of the archives and special collections, to this off-site facility. The estimated cost was $1 million in 1993. At the bunker, the usable old equipment was sold. Most non-load-bearing walls were removed. Compact stacks with a capacity for about 100,000 volumes were installed. A building that could have been the inspiration for Dr. Strangelove was transformed into a library depository ("You can't fight in here . . . this is the War Room!") (Dr. Strangelove 1964).
Fig. 1.
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