Vol 6, No 4.
Library of Congress copyright record shows publication date 1931-06-05
Page numbers run 289-384.
The cover illustrates "The Metal Monster."
Cover art is not credited; the artwork shows no signature.
Interior art is credited at the start of each story.
Story art for "Spacehounds of IPC (Part 1 of 3)" on page 295 is credited to "Wesso"; the artwork shows no signature.
Story art for "Cleon of Yzdral" on page 320 is credited to "Paul"; the artwork shows no signature.
Story art for "The Jameson Satellite" on page 335 is credited to and signed "Morey."
Story art for "The Metal Monster" on page 345 is credited to "Morey"; the artwork is signed "Leo Morey."
Story art for "The Raid of the Mercury" on page 364 is credited to "Morey"; the artwork is signed "Leo Morey."
Story art for "The Stolen Chrysalis" on page 373 is credited to and signed "Paul."
"What Do You Know?" is a list of questions about science facts. With each is listed the story page number on which the answer can be found.
"Discussions" is a letters column.
"In the Realm of Books" is a book review column.
