Z Book arts (making and use of books).
Za-Zk Production.
Za Authorship.
Zb Rhetoric.
Zd Writing.
Zh Printing.
Zk Binding.
Zl Distribution (Publishing and Bookselling).
Zp Storage and Use (Libraries).
Zt Description (Zt Bibliography; Zx Selection of reading;
Zy Literary history; Zz National bibliography.)




CHAPTER XXIII

Author-numbers, or book-marks


The books in a given group or class should stand on the shelves in
the alphabetical order of their authors' names, though this is not
necessary in a small library. This result is best secured by adding to
the class-mark of every book another mark, called an author-number or
book-number or book-mark, made up of the first letter of the author's
name and certain figures. Books bearing these author-numbers,
if arranged first alphabetically by the letters, and then in the
numerical order of the numbers following the letters, will always
stand in the alphabetical order of the authors' names. Different books