Lot of 50 commemorative first day issue stamp envelopes dating from the 1950s and 1960s with themes including:
Paul Revere (1958)).
100th anniversary of the birth of Booker T. Washington (1956).
Commemorating the world's first communications satellite Echo 1 (1960).
150th anniversary of Lewis and Clark expedition (1954).
Civil War centennial (1961).
Condition Report Very good with minimal signs of wear.