Prior to 2004, the Library usually received three copies of every WSU dissertation. One non-circulating print copy was located in the Manuscripts, Archives and Special Collections division. A second print copy was located in the appropriate subject library, as well as a third copy on microfilm. Starting in 1999, the Library received a few electronic copies of dissertations instead of print copies.

Effective in 2004, the Library receives dissertations either in electronic format or in print with the first copy located in Manuscripts, Archives and Special Collections; the second copy located in an appropriate subject library; and a third copy on microfilm.

Theses and dissertations from other institutions are not normally purchased. Exceptions are occasionally made if they contain especially significant material not otherwise available and if they are expected to be widely used rather than of interest only to a single researcher.