Taxonomy
- Korean War, 1950-1953 (1)
- Kramer, Leo (15)
- Kraus, Dorothy (3)
- Kraus, Henry (4)
- Krzycki, Leo (1)
- Ku Klux Klan (4)
- Ku Klux Klan (1915- ) (11)
- Kubista, Roy (2)
- Kugler, Phil (2)
- Kummernuss, Adolph (1)
- Kuthy, Eugene (1)
- Labor (2199)
- Labor arbitration (15)
- Labor Council for Latin American Advancement (1)
- Labor Day (54)
- Labor disputes (104)
- Labor education (27)
- Labor laws and legislation (22)
- Labor leaders--United States (46)
- Labor Legislation (1)
- Labor literature (937)
- Labor movement (145)
- Labor union democracy (10)
- Labor union meetings--United States--Planning (7)
- Labor unions (1341)
- Labor unions and communism (22)
- Labor unions--Accounting (1)
- Labor unions--Canada (2)
- Labor unions--Corrupt practices (2)
- Labor unions--Factionalism (18)
- Labor unions--Finance (3)
- Labor unions--History (15)
- Labor unions--Illinois--Chicago (6)
- Labor unions--Jurisdictional disputes (12)
- Labor unions--Law and legislation--United States (5)
- Labor unions--Mergers (19)
- Labor unions--organizing (133)
- Labor unions--Records and correspondence (18)
- Labor unions--United States--Archives. (5)
- Labor Zionism (1)
- Labor--United States--Periodicals (9)
- Labor-management relations (6)
- LaCour, Nat (3)
- Lafayette Park (Detroit, Mich.)--Buildings, structures, etc. (1)
- Lafferty, James (1)
- Lane, Kenneth E. (1)
- Law -- study and teaching (2)
- Lawson, James M., 1928- (5)
- League for Industrial Democracy (3)
- Learning Readiness (1)
