Dear Editor, Regarding the letter of Lynn Hereford ["Postmarks," April 23], questioning Gene Elder's letter ["Postmarks," April 16] on a Texan being in the White House during the filming of the John Wayne version of the Alamo. Hereford said "Unless Dwight David Eisenhower was a Texan, there was not a Texan in the White House when the film was released in 1960." The Hereford assignment is to look at a history book. Dwight David Eisenhower served as president of the USA from Jan. 20, 1953, to Jan. 20, 1961. He was born in Denison, Texas, on Oct. 14, 1890, although his family moved to Abilene, Kan., when he was a child. However, after his graduation from West Point in 1915, he returned to Texas when he was assigned to Fort Sam Houston near San Antonio, where he met and married Mamie Geneva Doud. Gee, I wish there were a real Texan in the White House now.