Worlds of Tomorrow, May 1967
| Editor | Frederik Pohl |
| Circulation Director/Manager | Mavis Fisher |
| Publisher | Robert M. Guinn, Galaxy Publishing Corporation |
| Contributing Writer | Fred Saberhagen, Douglas R. Mason, David A. Kyle, Simon Tully, Mack Reynolds, Richard Wilson, David H. Harris, Frederik Pohl, Sam Moskowitz |
| Cover Art by | Doug Chaffee |
| Production Director/Manager | David Perton |
| Advertising Manager/Coordinator | Lawrence Levine Assoc. |
| Printed by | The Guinn Co., Inc. |
| Periodical Title | Worlds of Tomorrow |
| Associate Editor | Judy-Lynn Benjamin |
| Format | Magazine |
| Language | English |
| Location | New York |
| Cover Date | 1967-05-00 |
| Pages / Font | 162 pages |
| Price | 50¢ |
| Volume Number | 4 |
| Issue Number | 4 |
| Issue Number | 23 |
| Chapters | NOVELETTES Stone Man by Fred Saberhagen Squared Out with Poplars by Douglas R. Mason Base Ten by David A. Kyle Whose Brother Is My Sister? by Simon Tully The Throwaway Age by Mack Reynolds ARTICLE Syracuse University's Science-Fiction Collections by Richard Wilson FEATURE The Uncommunicative Venusians by David H. Harris DEPARTMENTS Editorial by Frederik Pohl The Negro in Science Fiction by Sam Moskowitz |
| Notes | Printed in the U.S.A. |
Added by auboisdormant