REFERENCES FOR ADDITIONAL READING
Cook, G. L.
A library of trade catalogs. Library journal May 1919, p. 307-308.
Nourse, F. M.
Finding the needle in the haystack (photographs and cuts). System Feb. 1919, p. 218.
Peck, E. E.
Trade catalog file. Library journal July 1919, p. 442.
Selection of trade publications of manufacturing companies. The booklist April 1919, p. 285.
Stokes, C. W.
Classification and filing of photographs. Printers' ink August 3, 1916, p. 82-86.