Analog Science Fact Fiction Magazine May 1961 Christopher Anvil

Analog Science Fact - Fiction Magazine June 1961

Analog Science Fact - Fiction Magazine Sept. 1961

Analog Science Fact & Fiction Magazine December 1961

Analog Science Fact - Fiction Magazine April 1961

Analog Science Fact - Fiction Magazine July 1961

Vintage Analog Science Fact Fiction Digest Magazine October 1961

Analog Science Fiction & Fact August 1961 Frederik Pohl Mack Reynolds