Initials of the longest-serving US president

While searching our database we found 1 possible solution for the:   Initials of the longest-serving US president crossword clue. This clue was last seen on March 28 2020 in the popular Crosswords With Friends puzzle. The solution we have for Initials of the longest-serving US president has a total of 3 letters.

Answer

1F
2D
3R


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