Lot
654 
[Interior] Dewitt C. Laurence, Chief Clerk of Patent Office 1849-50. Free frank "Dewitt C. Laurence" signature on 1850 U.S. Patent Office imprint envelope to Cincinnati Oh., red "Washington D.C. Nov 25" cds with attached "Free" rating, original 1850 enclosure rejecting patent claim, pencil "Opened by Mistake, E. Eaiton" on reverse, Cincinnati red "ADV. 2" advertised due rating handstamp, sent to DLO with "P.O. Dept. Dead Letter Office" circular handstamp with ms. "May/ 8 1851" dating; red Patent Office wax seal; light wax seal stain and reduced slightly at right, F.-V.F., ex-Richard Graham Collection. Estimate $200 - 300.