Browse Exhibits (1 total)

Some of the original catalog cards for the Delta collection were mimeographed and sent to the FBI as part of a 1953 investigation of the mutilation of 135 volumes that were held in the restricted collection (up to 1,000 illustrations were removed from books). Images from those sheets are provided here as samples of how items were recorded as Delta books. Some included only the triangle symbol and others included "Delta" in the call number.

This project was made possible because catalogers at the Library of Congress kept excellent records, providing notes to staff regarding the former location of items in the Delta Collection and/or retaining "Delta" in the call number, even when the catalog moved online.

Many of the online records indicate that items are in a "Problem location," and the staff view shows that these were in the Delta Collection. Most of the time these books are in the Rare Books Reading Room.