(Contents information excerpted from The Internet Speculative Fiction Database)

Art:

• Meteorological Rocket Approaches Sun by uncredited
• The Earth Quarter by Ed Emshwiller
• Saint Julie and the Visgi by Ernie Barth
• The Men of Boru by Paul Orban
• Race Riot by Paul Orban
• Turnabout by John Styga
• Journey Work by John Styga

Essays:

• A Chat with the Editor (If, January 1955) by James L. Quinn
• Worth Citing (If, January 1955) by uncredited
• What Is Your Science I. Q.? (If, January 1955) by uncredited
• Science Briefs (If, January 1955) by uncredited

Novelette:

• Turnabout by Gordon R. Dickson

Novella:

• The Earth Quarter by Damon Knight

Short Stories:

• Saint Julie and the Visgi by Robert F. Young
• The Men of Boru by Jack A. Nelson
• Double Take by Wilson Parks Griffith
• Race Riot by Ralph Williams
• Journey Work by Dave Dryfoos
• Wedding Day by Winston K. Marks