A wide variety of receipts and memos from the following companies: California Electric Company (1908); California Electrical Works (1904); Armstrong Cork Company (1939); E.S. Greeley & Co. (1885); Electrical Construction and Maintenance Co. (1873); The Continental Rubber Works (1933); Kimble Glass Company (1926); Kerr Glass Mfg. Corp (1975); Hemingray Glass Co. (1902); Ohio Brass Co. (1902); New England Glass Co. (1863); C.S Knowles (1894); Whitall Tatum Co. (1938); L. G. Tillotson & Co. (1878); and from Paul Seiler Electrical Works (1894) a receipt for 176 regular insulators and brackets, total cost $15.46!