Crossword clues for the word: WARRENGHARDING The word WARRENGHARDING has appeared as an answer to at least 3 crossword clues on different crossword puzzles. Crossword clues for WARRENGHARDING Showing 1 to 3 of 3 results Clue(s) First president to file an income tax return Second of four U.S. president who, in 1922, became the first president to have his voice transmitted on the radio (3 wds.)