Petherbridge, Mary. Technique of Indexing, 1904. Secretarial Bureau.

Wheatley, H. B. How to Make an Index, 1902. Eliot Stock.

—— What is an Index: Notes on Indexes and Indexers, 1878. Index Society Publications.

320. Commercial and Library Indexing

320. Commercial and Library Indexing:

Byles, R. B. The Card Index System. Pitman.

Kaiser, J. The Card System at the Office, 1908. Vacher.

—— Systematic Indexing, 1911. Pitman.

Sayers and Stewart. The Card Catalogue, 1913. Grafton.

321. Filing