RT Book, Whole DB /z-wcorg/ DS http://worldcat.org ID 001074837 LA English T1 Observations on the mystery of print and the work of Johann Gutenberg A1 Van Loon, Hendrik Willem,, Rogers, Bruce,, Frederic W. Goudy Collection (Library of Congress), Pforzheimer Bruce Rogers Collection (Library of Congress), National Book Fair, PB Second National Book Fair : New York Times : Book Manufacturers' Institute PP [New York] YR 1937