On sale date from the publication date found at the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 35, 1940, Number 2. Second class permit. Copyright number 448583.
Everything's about ready, doctor. Ted is now aboard the ship stowing away a year's supply!
Genre
science fiction
Characters
Ted Hunt (first appearance); Jane Martin (first appearance); Dr. Matthew Martin (first appearance); Douglas Hunt (first appearance); Mercurian cave-people (first appearance); Flaedo (first appearance, villain, death); Zado (first appearance, villain); King of Thian (first appearance, villain); Otto (first appearance, villain); another spy (first appearance, villain); Varta
Synopsis
When spies try to steal her father's spaceship Jane launches it and she and Ted end up on Mercury.
The Masked Rider [Jim Sanford] (first and only appearance); The Specter [Harmon] (villain, first and only appearance); Chico (horse); Mr. Parsons; Sally Parsons
Synopsis
The Masked Rider shows up at a ranch where a costumed villain is killing ranch hands.
The Mask [Tony Colby]; Olly Snate (villain, death); Otto Fox (first appearance, villain, death); Carol Smith; Silk; Butch; Paul Stewart; Peter Gage; Warner; Murphy
Synopsis
The Mask solves who is behind a series of armored car robberies.