Released as Secretary of Mission Sunday schools. See Liahona The Elders' Journal, v. 30, n. 4, LEJ pg 91.
Information taken from the Texas Mission Index, 1930-1945, p. 26.
According to Liahona, The Elders' Journal, Volume 28, No. 25, Page 576, Donald Hyde served in the Texas mission (his earliest appearance being in May of 1931), suggesting that he was transferred from the Central States mission to the Texas mission.