Copperud, Roy H. AMERICAN USAGE: THE CONSENSUS
New York: Van Nostrand Reinhold Company, (1970). First edition. Hardcover. Very pale, very small area of offsetting to front endsheets, else this is a perfect, as-new copy in dark-red binding with silver spine lettering; in mildly age-toned, very lightly edgeworn photo-pictorial dust jacket.
Copperud consults the usage pantheon and compares seven authorities (himself included) on a host of disputed points. The work of Bernstein, Bryant, the Evanses, Flesch, Follett, Fowler/Gowers is cited. Very useful, as well as compellingly readable.