The atlas collection is housed in several different locations. Those that are too large for shelving in the bookstacks are housed in the graphic arts department. The maps in most of these atlases were described as part of the Catalogue of American Engravings Project, although it was subsequently decided to exclude maps from the catalogue because the description of variant states was too complex. Information from these entries has been transferred to cards that have been interfiled with the cards describing the map collection. Later atlases are filed in three sections.
National atlases are shelved first, then the arrangement is by state, county, and city.
These are filed chronologically. Modern reprints or historical atlases are listed in the general catalogue.