Analog Science Fiction - Science Fact August 1990 (Vol.110, No.9)
Cover by Todd Cameron Hamilton (for "The Hornless Ones.")

Novellas: "The Hornless Ones" by Paul Ash (Paulina Ashwell)
"Lord of Fishes" by Bernard Deitchman
Novelettes: "Return of the Alphanauts" by J. Brian Clarke
"Adam and Evil" by Joseph H. Delaney.
Science Fact: "The Negative Matter Space Drive" by Dr. Robert L. Forward.

Stories: "Fireworks in Orbit" by Marianne J. Dyson
"Matchmaker" by Thomas A. Easton
Feature: "If It Can Be Done, Nature's Done It Already" by Arthur C. Clarke
Probability Zero: "Schrodinger's Lifeboat" by Jerry Oltion.

Stanley Schmidt's editorial is "Bag Limit"