A Science Fiction Anthology of the 1930s, Book 1 of 3
Contents:
Introduction
Part 1: 1920 to 1930 by Isaac Asimov

Part Two: 1931 by Isaac Asimov
The Man Who Evolved / Edmond Hamilton, Wonder Stories Apr ’31
The Jameson Satellite / Neil R. Jones, Amazing Jul ’31
Submicroscopic / Captain S. P. Meek, Amazing Aug ’31
Awlo of Ulm / Captain S. P. Meek, Amazing Sep ’31
Tetrahedra of Space / P. Schuyler Miller, Wonder Stories Nov ’31
The World of the Red Sun / Clifford D. Simak, Wonder Stories Dec ’31

Part Three: 1932, Isaac Asimov
Tumithak of the Corridors / Charles R. Tanner, Amazing Jan ’32
The Moon Era / Jack Williamson, Wonder Stories Feb ’32

Originally 26 stories published in one hardcover volume.