Object — 2 card catalogs ; in boxes 9 x 14 x 31 cm. and 13 x17 x 32 cm.
The bibliographies date from Aldrich's graduate studies at Harvard University and contain citations prior to 1942. The first catalog on 3 x 5 in. cards is organized alphabetically with short abstracts; the second, on 4 x 6 in. cards is organized by subject.