Find books: Search the library catalog by topic and limit by date of publication.
Find autobiographies: Search the library catalog for the name of an individual as an author (last name, first).
Find memoirs, diaries or collections of letters or interviews: Search the library catalog for the name of an individual as an author (last name, first) or search by subject and add the appropriate subject terms to the subject heading: Correspondence, Letters, Diaries, Interviews, Personal narratives. (Ex.: subject keywords might be: Japanese American interviews or Japanese American diaries).
Find Speeches: Search the library catalog by names of authors or by subject and include -speeches indexes. (Ex.: Harry Truman speeches).
Find Pamphlets: Search the library catalog by subject and add the subject term -pamphlets. (Ex. Cold war pamphlets).
Find Photographs: Search the library catalog by subject and include the terms-photographs or -pictorial works. For example: world war 1939-1945 pictorial works.
Find Cartoons: To find books that discuss and reproduce cartoons from a specific time period, search library catalogs by subject and add the subject terms -caricatures and cartoons For example: -Spanish-American war caricatures and cartoons. Search an article database that includes Historical Newspapers, such as the Historical New York Times database.
Find primary source print books in the library using, for example, the following subject terms:
Labor leaders United States Biography
Labor unions United States Officials and employees Biography
American Federation of Labor Biography
African American labor leaders Biography
Women labor leaders United States Biography
Women labor union members United States Biography
Working class women United States Biography
Migrant agricultural laborers Labor unions Officials and employees United States Biography
United Mine Workers of America History
Clothing workers Labor unions United States History
Vanderbilt, Cornelius, 1794-1877
Rockefeller, John D. (John Davison), 1839-1937
Morgan, J. Pierpont (John Pierpont), 1837-1913
Capitalists and financiers United States Biography ("Biography" returns both biography and autobiography)
Industrialists United States Biography
Consumer behavior United States History
Consumer education United States History
Most major corporations also have historical advertisement archives. Many are digitized and freely available. Ask a librarian for help to find them.
Documenting the American South
American Federationist 1896-1976
British Columbia Federationist 1911-1925
Cigar Makers' Official Journal 1897-1954 & 1963-1972
Industrial Union Bulletin 1907-1909
Ladies’ Garment Worker 1910-1918
Archives.org Milestone Documents - not all are labor related, but many are.