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." ...

sent a cease-and-desist letter to Ruston High School in northern Louisiana for its use of its trademarked block 'R' logo, Supervisor of Secondary Education for Lincoln Parish Schools Ricky Durrett ...

Those words describe the new logo for Volkswagen’s R and R-Line ... observers mightn’t immediately recognise it as being a letter 'R'. Designed in-house, it’s intended to be “modern ...