Contents (view Concise Listing)

• fep •  The Strangers • interior artwork by Frank Kelly Freas [as by Kelly Freas]
• 2 • A Chat with the Editor (If, May 1955) • [A Chat with the Editor (If)] • essay by James L. Quinn
• 4 • Snowball • novelette by Poul Anderson
• 4 •  Snowball • interior artwork by Frank Kelly Freas [as by Kelly Freas]
• 36 • Watershed • [Pantropy] • short story by James Blish
• 36 •  Watershed • interior artwork by Frank Kelly Freas [as by Kelly Freas]
• 44 • Easy Does It • novelette by E. G. Von Wald
• 45 •  Easy Does It • interior artwork by Paul Orban
• 60 • They Were Different • short story by Neil J. Kenney
• 61 •  They Were Different • interior artwork by Paul Orban
• 74 • Worth Citing (If, May 1955) • essay by uncredited
• 75 • The Pacifists • short story by Charles E. Fritch
• 82 • The Laboratorians • short story by Edward Peattie
• 83 •  The Laboratorians • interior artwork by Ed Emshwiller [as by Emsh]
• 94 • The Outer Quiet • short story by Herbert D. Kastle
• 95 •  The Outer Quiet • interior artwork by Ed Emshwiller [as by Emsh]
• 104 • Witness • short story by George H. Smith
• 104 •  Witness • interior artwork by Frank Kelly Freas [as by Kelly Freas]
• 110 • What Is Your Science I. Q.? (If, May 1955) • essay by uncredited
• 111 • Firth's World • short story by Irving E. Cox, Jr. [as by Irving Cox, Jr.]
• 118 • Science Briefs (If, May 1955) • essay by uncredited