Vol 5, No 1.
Library of Congress copyright record shows publication date 1930-03-05
Page numbers run 1-96.
The cover illustrates "The Conquest of the Earth."
Cover art is not credited; the artwork is signed "Leo Morey."
Interior art is credited at the start of each story.
Story art for "The Metal Horde" on page 7 is credited to "De Pauw"; the artwork is signed "J. De Pauw."
Story art for "Remote Control" on page 23 is credited to "Wesso"; the artwork shows no signature.
Story art for "The Feathered Detective" on page 31 is credited to "Morey"; the artwork is signed "Leo Morey."
Story art for "The Conquest of the Earth" on page 42 is credited to "Morey"; the artwork is signed "Leo Morey."
Story art for "Rhythm" on page 55 is credited to "Morey"; the artwork is signed "L Morey."
Story art for "The Green Girl (Part 2 of 2)" on pages 60 and 77 is credited to "Wesso"; the artwork is signed "HWesso."
"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.
