AN - Newspapers 8,683
AC - Collections and Collected Works 3,324
AP - Periodicals 2,136
AS - Academies 1,401
AY - Yearbooks, Almanacs, Directories 237
AM - Museums and Collecting 215
AE - Encyclopedias 79
AI - Indexes 70
AZ - History of Scholarship 37
AG - Dictionaries and Reference 26
F - General American History 1
HQ - Family, Marriage, Women 1
RL - Dermatology 1
RM - Therapeutics and Pharmacology 1