Note: The book review department of Galaxy initially ran from the first issue in Oct. 1950 through Dec. 1963 with slight title variation: Galaxy's Five Star Shelf: Oct. 1950 Galaxy's 5 Star Shelf: Jan. 1951-Dec.1963 Reviewers were: Groff Conklin: Oct. 1950-Sept. 1955 Floyd C. Gale (pseudonym of Floyd Clifford Gold): Nov. 1955-June, Oct. 1963 Theodore Sturgeon: Aug. 1963 Theodore Sturgeon and Frederik Pohl: Dec. 1963 Some issues featured guest reviewers: Willy Ley: Aug. 1951 Robert A. Heinlein: Dec. 1951 Villiers Gerson: June 1952 Books reviews were not published in 1964 and 1965 until the department was revived as Galaxy Bookshelf in Feb. 1966 with Algis Budrys as the reviewer