Analog Science Fiction/Science Fact Vol. 71 #2 FN 1963

Analog Science Fiction/Science Fact Vol. 71 #6 VF 1963

Analog Science Fiction/Science Fact Vol. 96 #9 VF+ 8.5 1976

Analog Science Fiction/Science Fact Vol. 71 #4 FN/VF 7.0 1963

Analog Science Fiction/Science Fact Vol. 97 #7 VF+ 8.5 1977

Analog Science Fiction/Science Fact Vol. 71 #4 FN+ 6.5 1963

Analog Science Fiction/Science Fact Vol. 73 #6 VF- 7.5 1964

Analog Science Fiction/Science Fact Vol. 72 #2 VF 1963