321. Filing:
Cope, E. A. Filing Systems: Their Principles and their Application to Modern Office Requirements. Pitman.
Dana, J. C. American Library Economy [Various Sections, particularly v. i., pt. 5, sec. 3, Picture Collection; pt. 6, Art Department; v. ii., pt. 1, Colour and Position Filing; pt. 18, sec. 1, The Vertical File (revised ed. entitled the Information File); etc.], 1909. Woodstock, Vermont: Elm Tree Press.
Jast, L. S. A Classification of Library Economy and Office Papers, 1907. Grafton.
For articles, consult Index of Cannons under Indexing and Filing.