Page "If (magazine)" Paragraph 13

In April 1963, Galaxy Publishing brought out the first issue of Worlds of Tomorrow, another science fiction magazine, also edited by Pohl.

The magazine published some well-received material and was profitable, but Guinn, the publisher and owner, decided in 1967 that it would be better to have Galaxy resume a monthly schedule ; both Worlds of Tomorrow and Galaxy were bimonthly at that time, while If was monthly.

With the August 1967 issue Worlds of Tomorrow was merged with If, though it was another year before Galaxy actually switched to a monthly schedule.

By this time If had become monthly again, starting with the July 1964 issue ( though the schedule had an initial hiccup, omitting September 1964 ).