William F. Buckley Jr. signs a typed letter, dated 23 March 1976 on ''National Review'' letterhead, the preeminent conservative publication that Buckley founded in 1955. Letter to Dr. Ben Braude reads, ''How kind of you to write. No, I don't have a bibliography of my work, but if you spot something I have written which you can't get and I can, you have only to let me know...[signed] Wm. F. Buckley''. Minor creasing and soiling to 8.5'' x 11'' letter. Very good condition.