If [Vol. 17 No. 11, Issue 120, November 1967] ed. Frederik Pohl (Galaxy Publishing Corporation, 60¢, 164pp, digest, cover: Thus Spake Marco Polo by Vaughn Bodé)
_162 · [letter from Baton Rouge, LA] · Thomas Miller · lt
If [Vol. 17 No. 12, Issue 121, December 1967] ed. Frederik Pohl (Galaxy Publishing Corporation, 60¢, 164pp, digest, cover: City of Yesterday by Douglas Chaffee)
If [Vol. 18 No. 1, Issue 122, January 1968] ed. Frederik Pohl (Galaxy Publishing Corporation, 60¢, 164pp, digest, cover: He That Moves by John Pederson, Jr.)
_161 · [letter from Berrien Springs, MI] · Mrs. Rhoda Wills · lt
_162 · [letter from Mason City, IA] · Vance E. James · lt
_162 · [letter from Allen Park, MI] · James Koval · lt
If [Vol. 18 No. 4, Issue 125, April 1968] ed. Frederik Pohl (Galaxy Publishing Corporation, 60¢, 164pp, digest, cover: The Product of the Masses by Bodé)
4 · For a Festival of Science Fiction · Frederik Pohl · ed