Howard L. Wilson, Mfr., 61 State St., Rochester, N.Y. (p.392)

Miller, Kempster B., William A. Colledge, Alfred S. Johnson, and Carl S. Dow, eds. Technical World Magazine. Chicago, IL: American School of Correspondence at Armour Institute of Technology, 1905. https://www.google.com/books/edition/Technical_World_Magazine/CgLOAAAAMAAJ?hl=en&gbpv=0

Specific issue: The Technical World, Volume II, No. 3, November 1904 Chicago

Geyers Stationer. “Memindex Advertisement.” Geyer’s Stationer: Devoted to the Interests of the Stationery, Fancy Goods and Notion Trades, September 15, 1904. https://www.google.com/books/edition/Geyer_s_Stationer/L507AQAAMAAJ?hl=en&gbpv=0

Howard L. Wilson of Rochester, NY named his vest pocket card index system the Memindex.