The most memorable letter-as-logo is Barack Obama's "O," but before him, Hubert H. Humphrey (D) used a triple "H" in 1968, and one iteration of George W. Bush's (R) 2004 logo used just the "W." ...

Twitter has replaced its longtime bird logo with an X in order to fit owner Elon Musk's preferred aesthetic. Musk is famously a fan of the letter X, applying it to everything from his companies to ...