Analog Science Fiction/Science Fact Vol. 91 #2 FN 6.0 1973

Analog Science Fiction/Science Fact Vol. 91 #2 FN/VF 7.0 1973

Analog Science Fiction/Science Fact Vol. 91 #4 FN- 5.5 1973 Low Grade

Analog Science Fiction/Science Fact Vol. 94 #2 FN 1974 Stock Image

Analog Science Fiction/Science Fact Vol. 90 #6 FN/VF 7.0 1973

Analog Science Fiction/Science Fact Vol. 99 #4 FN 1979 Stock Image

Analog Science Fiction/Science Fact Vol. 98 #4 FN 1978 Stock Image

Analog Science Fiction/Science Fact Vol. 99 #3 FN 1979 Stock Image