three covers, first ca. 1851 with "Free. Post Office Business." fancy handstamp on cover to Warrenville, Illinois, red "Chicago Ill. Sep 29" datestamp, overall toning and faults; second ornate printed "Post Office, Chicago, Ill., Official Business, Free." frank in upper right of 1862 cover to Springfield, Illinois, July 27 double circle datestamp, very fine; third with same frank at upper left of locally-addressed cover with blue "Chicago Advertised Nov 24 1862" shield handstamp (AD-4), also very fine, a rare trio with very few examples recorded of either the handstamped or printed frank, all three illustrated in Piszkiewicz (page 25)