1791 CADWALLADER DAVID COLDEN ALS DOCUMENT: From the original 1997 Early American History Auctions catalog: ''Cadwallader David Colden, New York Mayor 1818-1820. Autograph Letter Signed, ''Cadw D Colden'' and ''Cadwallader D Colden'' on pale, green laid paper, Dec 29, 1791, 2 pages, 9'' x 7 1/4'', Fine. A letter of substitution. Normal folds and browning, three seals still attached, a few small, scattered holes and edge tears. Two nice signatures from this obscure, yet significant, American signature.''