. "William Henry Letherman"@en . . "Letterman, William Henry"@en . "William Henry Letterman"@en . "1832-08-12Z"^^ . "Co-founder of Phi Kappa Psi" . . "1832Z"^^ . "William Henry Letterman was born in Canonsburg, Pennsylvania. (August 12, 1832 - May 23, 1881) He was the co-founder of the Phi Kappa Psi Fraternity in 1852 at Jefferson College in Canonsburg, Pennsylvania."@en . . . . "1881-05-23Z"^^ . . . "1881Z"^^ . .