I just found a listing on ebay saying this series came out in 1973.
1888
1961
February 10, 1975
Actually, the 1 cent postage on postcards was from July 1, 1898 to Jan. 1, 1952. I have a post card in my possession with a 1 cent stamp on it that was dated Oct. 24, 1934.
The first US flag was made July 14, 1777
1939
I don't see any writing on the flag. The lower right of the stamp has the year in small numbers, but there is nothing on the flag itself.
There is an 11 cent stamp in the presidential series which was current from 1939 to 1954. First class postage was never 11 cents-it jumped from 10 cent directly to 13 cents.
These came out in 1968, both the coil and sheet type.
This stamp (Scott # 1424) came out in 1971 to honor the passing of MacArthur five years earlier.
1996
This stamp came out on 10/20/1972.
1888
1932
2012
1961
This stamp came out on March 15 (his birthday) in 1967.