The alphabet : fifteen interpretative designs drawn and arranged with explanatory text and illustrations (1918)
Goudy, Frederic W. (Frederic William), 1865-1947, Goudy, Bertha, 1869-1935, compositor, Rudge, William Edwin, 1876-1931, printer, Kennerley, Mitchell, 1878-1950, publisher, Village Press, Walker Engraving Company · New York : Mitchell Kennerley · leaf 72
Gmm … G is an invention of the Romans, who at first used C for the sounds of both k 6? g; but after the middle of the third cent. B. C. to signify the hard sound of G they converted C into G by adding an upright bar to the lower curve. G
Alphabet · Alphabets · Typography · Printing
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.