SET OF 3 FIRST DAY COVERS 

 single, pair & block of 4 stamps

       SCOTT #: 1070        

 "Atoms for Peace"

Prof. Albert E. Einstein - "To find the way by which the inventiveness of man shall be consecrated to his life"

Cancelled First Day of Issue  

July 28, 1955  Washington, D.C.

Artcraft cachet