Avon Science Fiction Reader was a US Digest-size magazine, published by Avon Books, edited by Donald A Wollheim,
and as with its companion series, Avon Fantasy Reader treated by Wollheim as an Anthology series.
It had a policy similar to that of its
companion, but featured sf mostly of routine pulp quality rather than fantasy reprints. There were three issues,
two in 1951 and one in 1952. Both magazines were terminated when Wollheim left Avon Books in 1952 and were superseded
by Avon Science Fiction and Fantasy Reader.
From sf Encyclopedia