Loose leaf books and systems for general business (1907)
Risque, F. W · St. Lous, Mo., Press of R.P. Studley & Co. · leaf 160
152 Loose Leaf Books and Systems. … (C) SCREW AND LEVER FLAT BACK. Back of Sheet Steel. Steel Mechanism. Capacity IX, 2 and 3 inches. Size 8X to 19 inches. Expansion 80%,
Filing systems · Card system in business · Bookkeeping
Internet Archive · University of California Libraries · Public domain (published before 1931). Free to use for anything.