Of the 48 states recognized at the time of the 19th Amendment, several states did not formally ratify the amendment until much later. This was basically due to the amendment being accepted after 36 states ratified it.
Ratification was completed on August 18, 1920, and the following states subsequently ratified the amendment:
Connecticut (September 14, 1920, reaffirmed on September 21, 1920)
Vermont (February 8, 1921)
Delaware (March 6, 1923, after being rejected on June 2, 1920)
Maryland (March 29, 1941 after being rejected on February 24, 1920; not certified until February 25, 1958)
Virginia (February 21, 1952, after being rejected on February 12, 1920)
Alabama (September 8, 1953, after being rejected on September 22, 1919)
Florida (May 13, 1969)[21]
South Carolina (July 1, 1969, after being rejected on January 28, 1920; not certified until August 22, 1973)
Georgia (February 20, 1970, after being rejected on July 24, 1919)
Louisiana (June 11, 1970, after being rejected on July 1, 1920)
North Carolina (May 6, 1971)
Mississippi (March 22, 1984, after being rejected on March 29, 1920)
Alaska and Hawaii were not states when the Nineteenth Amendment was ratified.
http://en.wikipedia.org/wiki/Nineteenth_Amendment_to_the_United_States_Constitution