1928-1930 Request Collection Context Rare Book & Manuscript Library Earl I. Sponable papers, 1928-1968Series II: General FilesGrandeur
1930 Request Collection Context Rare Book & Manuscript Library Earl I. Sponable papers, 1928-1968Series II: General FilesSociety of Motion Picture EngineersBoard of Governors
1930 Request Collection Context Rare Book & Manuscript Library Earl I. Sponable papers, 1928-1968Series II: General FilesSponable, Earl I.-letters from outside companies
1930 Request Collection Context Rare Book & Manuscript Library Earl I. Sponable papers, 1928-1968Series II: General FilesWall, J.M., Machine Company, Inc.
1930-1931 Request Collection Context Rare Book & Manuscript Library Earl I. Sponable papers, 1928-1968Series II: General FilesGrandeur
1930-1931 Request Collection Context Rare Book & Manuscript Library Earl I. Sponable papers, 1928-1968Series II: General FilesMiscellaneous
1930-1931 Request Collection Context Rare Book & Manuscript Library Earl I. Sponable papers, 1928-1968Series II: General FilesSixteen millimeter
1930-1931 Request Collection Context Rare Book & Manuscript Library Earl I. Sponable papers, 1928-1968Series IX: PhotographsEquipment
1930-1932 Request Collection Context Rare Book & Manuscript Library Earl I. Sponable papers, 1928-1968Series II: General FilesSociety of Motion Picture EngineersGeneral
1930-1932 Request Collection Context Rare Book & Manuscript Library Earl I. Sponable papers, 1928-1968Series II: General FilesSociety of Motion Picture EngineersConventions and conferences