Ogg, Oscar. The 26 letters. - Rev. ed. - New York, Crowell [1971] - 294 p. illus. (part col.), facsims., col. maps. 24 cm. Include index ISBN: 0690841159 LCCN: 70140646 Subjects--Topical Terms: Writing--History.Alphabet. LC Class. No.: P211 / .O4 1971 Dewey Class. No.: 411