(Maryland) Pleasant Grove, Maryland, Allegany County, beautiful red printed combined townmarking and advertising corner card for the "Wood Type, Proof Presses for Stamps etc.", with woodcut whale and ribbons, on two covers addressed to family member Sophia Zevely in North Carolina, one handstamped in black circular "Free, May 8, 1852", both with manuscript Zevely Free Frank, with original enclosures, accompanied by 5 additional Zevely covers (most with enclosures) and a portion of letter from Alexander N. Zevely to his brother Edmond S. Zevely (Pleasant Grove P.M.) concerning a stamping machine…If you bring a stamping machine, keep quiet about it. We must have a exhibition to a select few within Dept first. Will it stamp letters & packets of various thicknesses with equal facility? Can't you fix several similar stamps - say for Washington - so as to work together & mark as many letters at the same time?, Very Fine and choice. Estimate  $2,000 - 3,000. A WONDERFUL ZEVELY CORRESPONDENCE BEARING TWO RARE PRINTED COMBINED TOWNMARKING AND ADVERTISING CORNER CARD CACHETS. $0 (Image)