Haydon's Express. Paid. frank (Haller FH6), printed express company frank in a double lined box, with detailed information about its routes, used on 3c Red on buff Nesbitt entire (U10), cancelled by partly clear double oval 'Haydon's Express, Petaluma (Cal.)', and New York datestamp, to Gen J.W. Denver in Washington D.C., quite fresh and nearly very fine, rare, the only example recorded, this expressman supplemented his pharmacy and bookstore by operating from Petaluma into various places in Sonoma and Marin county, 1855 to 1857, illustrated in Nathan