A - General Works = "A - 総記"
B - Philosophy, Psychology, Religion = "B - 哲学、心理学、宗教"
C - Historical Sciences = "C - 歴史学"
D - World History = "D - 世界史"
E - United States History = "E - 合衆国史"
F - General American History = "F - アメリカ史"
G - Geography, Anthropology, Recreation = "G - 地理学、人類学、レクリエーション"
H - Social Science = "H - 社会科学"
J - Political Science = "J - 政治学"
K - Law = "K - 法律"
L - Education = "L - 教育"
M - Music = "M - 音楽"
N - Fine Arts = "N - 美術"
P - Language and Literature = "P - 言語と文学"
Q - Science = "Q - 自然科学"
R - Medicine = "R - 医学"
S - Agriculture = "S - 農業"
T - Technology = "T - 技術"
U - Military Science = "U - 軍事"
V - Naval Science = "V - 海事"
Z - Library Science = "Z - 図書館学"