Stamps Situation Interchangeable

C119 - Igor Sikorsky
Manuel Briones
C118 - Samuel P. Langley
Manuel Briones
C114 - Lawrence and Elmer Sperry
Manuel Briones
C80 - Statue of Liberty
Manuel Briones
C76 - First Man on the Moon
Manuel Briones
C68 - Amelia Mary Earhart
Manuel Briones
C66 - Montgomery Blair
Manuel Briones
C54 - Jupiter Globe
Manuel Briones
4165 - Louis Comfort Tiffany
Manuel Briones
4138 - Canadian Mouflon
Manuel Briones