North America
1991 Black Heritage – Jan E. Matzeliger
1991 Black Heritage – Jan E. Matzeliger
1991 History of World War II – 1941: A World at War
1991 History of World War II – 1941: A World at War
1991 Express Mail – Bald Eagle & Olympic Rings
1991 Express Mail – Bald Eagle & Olympic Rings
1991 Numismatics – Coins & Bank Notes
1991 Numismatics – Coins & Bank Notes