C - Historical Sciences 56 L - Education 39 M - Music 37 K - Law 32 S - Agriculture 21 B - Philosophy, Psychology, Religion 18 R - Medicine 17 T - Technology 15 D - World History 14 H - Social Science 11 P - Language and Literature 11 A - General Works 7 F - General American History 7 E - United States History 6 G - Geography, Anthropology, Recreation 3 V - Naval Science 3 J - Political Science 2 Z - Library Science 1