GALAXY Science Fiction: March 1971 (Volume 31, Number 4)
All illustrations by Jack Gaughan. Cover by Jack Gaughan (for "Pegasus Two.")

Novelettes: "The Mountain Movers” by A. Bertram Chandler (a “John Grimes/Rim” story)
“But the Secret Sits” by Greg Benford
“Mother in the Sky with Diamonds” by James Tiptree, Jr

Serial: "A Time of Changes" (Part 1 of 3) by Robert Silverberg (this was a Hugo nominee, and won the Nebula award for "best novel")

Stories: "Pegasus Two” by Ernest Taves
“Choice” by J. R. Pierce
“Frog Pond” by Chelsea Quinn Yarbro
“Here Comes the Sun” by Duncan Lunan (an "Interface" story)
“Gehenna” by Barry Malzberg

Ejler Jakobsson is editor, Judy-Lynn Benjamin is managing editor, Lester del Rey is feature editor, Jack Gaughan is Associate Art Director, Galaxy Bookshelf by Algis Budrys.