By the end of the 1930s science fiction was a growing market, with several new sf magazines launched in 1939.

By the end of the 1930s the field was booming, and several new sf magazines were launched in 1939.

The first sf magazine to change to digest size was Astounding, in 1943.

After the banners were in place, Hamilton proposed launching a monthly sf magazine.

It received enthusiastic reviews in the three leading SF magazines of the day.

He became a moderately prolific contributor to SF magazines in the 1960s and early 1970s.

For this they offered a gee - whiz word rate - compared with SF magazines.

For this they offered a gee-whiz word rate-compared with SF magazines.

It was regarded as one of the leading sf magazines almost from the start, and its influence did not wane until Pohl's departure in 1969.

At ten cents, the magazine was cheaper than any of the other sf magazines of the day, and it sold well, despite Pohl's limited resources.