Since the beginning, its main focus has been the collection of manuscripts which includes papers from over 740 psychologists.
In 1980, numerous gifts of books were added to the collection, and they include published literature dealing with the "substantive content of psychology as well as with its history and philosophy."
[1] The collection contains over 740 individual collections, 50 records from organizations, 1,000 instruments and apparatuses, 6,000 film records, 15,000 images, 6,000 three-dimensional as well as paper and pencil tests, and 50,000 volumes including rare books, textbooks, professional and trade publications.
These include: A wall-breaking ceremony was held on February 26, 2010 in order to mark the beginning of the renovation of the old Roadway Express records building, which was built in 1916.
[5] AHAP's prior home in the basement of the Polsky building, which provided only 10,000 square feet (930 m2) of storage space and lacked a prominent location, helped fuel the decision for the facility to re-locate.