Varied condition:

1950: Stories by Fletcher Pratt, D.D. Sharp, Ray Cummings, Frank Kelly, and more. The corners of the covers and the first few pages are torn off and some edge chips. Spine creases. No loose or missing pages. 

1951: Stories by Jack Williamson, Eando Binder, Manly Wade Wellman and more. Spine and cover creases. Small tears at the spine hinges and at the top and bottom of the spine. Small edge tears.

1952: Stories by S,S. Held, John w. Campbell Jr, Lloyd Arthur Eshbach, and more. Small tears at the spine hinges and at the top and bottom of the spine. Small cover chips and edge tears. Date stamped onthe front cover. Some notes written on the table of contents page. 

1953: Stories by Jack Williamson, Ray Bradbury, Robert Heinlein, Henry Kuttner, Isaac Asimov, and more. Spine creases. Small tears and chips at he edges of the cover, some covered with tape.