Three full binders of pristine First Day of Issue cachet covers: 1) Flags of the Fifty States, all postmarked February 23, 1976, in alphabetic order from Alabama to Wyoming. Includes a soft cover book about the set with interesting details about each state, the state seal, the state flag, and the design of the cachet itself; 2 and 3) two Fleetwood binders, fifty covers in one binder, 48 in the second, of First Day of Issue covers from 1978 to 1979. Topics include the Viking Mars Lander, Hot Springs National Park (trees), Jules Verne (issued by Monaco), Love by Elizabeth Barrett Browning, North American Wildlife (issued by Canada and USA), Famous Sea Explorers, Wright Brothers, Heroes of the Revolution, US Olympics, and many others. City: State: Date:1976