Put your time, skill, energy, and money into the making of a full card catalog; keep this up to date; give the public access to it; teach them how to use it, and you will find the printed catalog not needed.
On cards prepared for the purpose [see chapter on Things needed (9) and Library Bureau catalog], a card for each book--and a book is a book although in several volumes--write the author's surname (if the book is anonymous write first the title), given name or names, if known, title, date of copyright, date of publication, call-number, and such other data as seem desirable.

The price, for example, may be put here, and the size, indicating this by a letter.

[See Cole size card in chapter on Things needed (9) and in Library Bureau catalog.] Arrange these cards alphabetically, by authors' names for an author catalog.

This catalog will be in constant use in the purchasing of books, in classifying new purchases, etc.

By the call-number one can refer from any entry in it to the entry of the same book in the shelf-list.