Theodore R. Bogan (May 10, 1909 – January 29, 1990)[1] was an American country blues guitarist, singer and songwriter,[2] best known for his work with Howard Armstrong and Carl Martin.

[2] He learned to play a finger-picking style of guitar in his adolescence, being initially influenced by Leroy Carr and Blind Blake, both of whom he heard on his family's radio set.

[2] The group played a mixture of musical genres and styles, including the blues, jazz, pop, country, and various non-English favorite melodies.

In 1974, Martin, Bogan & Armstrong played at the 36th National Folk Festival, at Wolf Trap Farm Park in Vienna, Virginia.

[6] Bogan and Armstrong appeared and performed in the 1985 documentary film Louie Bluie, directed by Terry Zwigoff, who had been inspired to seek them out after listening to "State Street Rag".