Hart's Rules

Hart's Rules for Compositors and Readers at the University Press, Oxford was an authoritative reference book and style guide published in England by Oxford University Press (OUP). Hart's Rules originated as a compilation of rules and standards by Horace Hart over almost three decades during his employment at other printing establishments, but they were first printed as a single broadsheet page for in-house use by the OUP in 1893 while Hart was Controller of the University Press. They were originally intended as a concise style-guide for the staff of the OUP, but they developed continuously over the years, were published in 1904, and soon gained wider use as a source for authoritative instructions on typesetting style, grammar, punctuation and usage.

from http://en.wikipedia.org/wiki/Hart%27s_Rules