COVER : USA FIRST DAY COVER (1967)


 

COVER : USA FIRST DAY COVER (1968)


 

COVER : USA FIRST DAY COVER (1970)


 

COVER : USA FIRST DAY COVER (1971)



 

COVER : USA FIRST DAY COVER (1976)


 

COVER : USA FIRST DAY COVER (1976)


 

COVER : USA FIRST DAY COVER (1978)



 

COVER : USA FIRST DAY COVER (1991)