Analog Science Fiction / Science Fact September 1970 Very Good-

Analog Science Fiction / Science Fact June 1970 Very Good

Analog Science Fiction / Science Fact April 1970 Good+

Analog Science Fiction / Science Fact October 1970 Good+

Analog Science Fiction / Science Fact December 1970 Very Good

Analog Science Fiction / Science Fact March 1970 Very Good-

Condé Nast Analog Science Fiction/Science Fact Aug 1970 Illustrated Issue 6/7

Analog Science Fiction / Science Fact January 1970 Good+