AN - Newspapers 8,679
AC - Collections and Collected Works 3,323
AP - Periodicals 2,137
AS - Academies 1,384
AY - Yearbooks, Almanacs, Directories 236
AM - Museums and Collecting 195
AE - Encyclopedias 73
AI - Indexes 70
AZ - History of Scholarship 36
AG - Dictionaries and Reference 25
F - General American History 1
HQ - Family, Marriage, Women 1
RL - Dermatology 1
RM - Therapeutics and Pharmacology 1