Pratt and Whitney Aircraft Company (East Hartford, Conn.), 1936-1937 Box 231, Folder 2879 Bookmark Collection Context Yale University -Beinecke Rare Book and Manuscript Library Trade catalogs collection., 1800-1978…
Pratt and Whitney Company (Hartford, Conn.), 1892-1950 Box 242, Folder 2958-2960 Bookmark Collection Context Yale University -Beinecke Rare Book and Manuscript Library Trade catalogs collection., 1800-1978…
Pratt, B. G., Company, undated Box 231, Folder 2872 Bookmark Collection Context Yale University -Beinecke Rare Book and Manuscript Library Trade catalogs collection., 1800-1978…
Pratt, Charles (New York, N.Y.), 1869- Box 231, Folder 2873 Bookmark Collection Context Yale University -Beinecke Rare Book and Manuscript Library Trade catalogs collection., 1800-1978…
Precision Equipment Company (Chicago, Ill.), undated Box 231, Folder 2880 Bookmark Collection Context Yale University -Beinecke Rare Book and Manuscript Library Trade catalogs collection., 1800-1978…
Precision Scientific Company (Chicago, Ill.), 1938- Box 231, Folder 2881 Bookmark Collection Context Yale University -Beinecke Rare Book and Manuscript Library Trade catalogs collection., 1800-1978…
Prentice, James (New York, N.Y.), 1880- Box 231, Folder 2882 Bookmark Collection Context Yale University -Beinecke Rare Book and Manuscript Library Trade catalogs collection., 1800-1978…
Prescott, J. B., and Son (Webster, Mass.), 1894- Box 231, Folder 2883 Bookmark Collection Context Yale University -Beinecke Rare Book and Manuscript Library Trade catalogs collection., 1800-1978…
Pressed Steel Car Company (Pittsburgh, Pa.), 1899- Box 231, Folder 2884 Bookmark Collection Context Yale University -Beinecke Rare Book and Manuscript Library Trade catalogs collection., 1800-1978…
Price, Theodore H., and Company (New York, N.Y.), 1910- Box 231, Folder 2885 Bookmark Collection Context Yale University -Beinecke Rare Book and Manuscript Library Trade catalogs collection., 1800-1978…