Herbert H. Lehman Collections. Rare Book & Manuscript Library, Columbia University in the City of New York. Finding Aid.

Herman Hollerith papers, 1850–1982. MSS 49510, Manuscript Division, Library of Congress, Washington, DC. Finding aid.

Hermann Schuelein Collection. AR 776, Leo Baeck Institute, New York, N.Y. Available online.

Hihn-Younger Archive. Special Collections, University Library, University of California at Santa Cruz. Digital Collections.

Hirsch-Weis Company Records. MSS 1436, Oregon Historical Society, Portland, Ore. Finding aid.

"History of the House of H. Hackfeld & Co." Hawaiian Almanac and Annual for 1902 28 (1901): 43–54.

Hohner Collection. Deutsches Harmonikamuseum, Trossingen, Germany. Information online.

Hohner Records, Bestand Hohner. Wirtschaftsarchiv Baden-Württemberg (WABW), Stuttgart-Hohenheim, Germany.

Hormel Family Collection. Archives of Hormel Foods, Austin, MN.

Hutzler Brothers Company, 1784-1977. Maryland Historical Society, Baltimore, MD. Finding aid.

Hutzler’s Business Papers. Jewish Museum of Maryland, Baltimore.

Interview with Otto Bettmann, 1982. The New York Public Library-American Jewish Committee Oral History Collection, Dorot Jewish Division, The New York Public Library, Astor, Lenox and Tilden Foundations.

Irving G. Thalberg and Norma Shearer papers and other collections. Margaret Herrick Library, Beverly Hills, California.

J. & W. Seligman & Company Archives. University of Oklahoma Libraries. Overview.

Jacob H. Schiff Papers, 1865-1920. The American Jewish Archives, Cincinnati, OH. Finding aid.

John A. Roebling Collection. Archives Center, National Museum of American History, Smithsonian Institution, Washington, D.C. Finding aid.

John Philip Sousa Collection. Music Division, Library of Congress, Washington, D.C. Available online.

Joseph and Sinclair Jacobs Papers. MS 222. The Atlanta History Center.

Joseph B. Jacobs Papers. Mss 165, Cuba Family Archives for Southern Jewish History of The Breman Museum, Atlanta, GA. Finding aid.

Joseph Schaffner 1848–1918: Recollections and Impressions of his Associates. Chicago: Privately Published, 1920.