GERSON, Jean Charlier (1363-429). Tractatus de pollucione nocturna, [Cologne: Ulricus Zell, about 1467-72], 4° (209 x 135mm.), third edition, 15 leaves (of 16, lacking front blank), 27 lines with initials supplied in red (old stamps erased on folios 9 and 15), polished calf by H. Duru, gilt fillet borders and inner dentelles, g.e. [BMC I 184; Hain 7696; Goff G256]