Signatura
P - Language and Literature
31
D - World History
30
H - Social Science
24
K - Law
8
L - Education
8
Q - Science
7
T - Technology
7
F - General American History
6
B - Philosophy, Psychology, Religion
3
J - Political Science
3
M - Music
3
Z - Library Science
2
C - Historical Sciences
1
E - United States History
1
G - Geography, Anthropology, Recreation
1
R - Medicine
1
S - Agriculture
1