Available on page 99, Bleiler (Gernsback).
Source · ISFDB CC BY 4.0
Placement
- Professor Challenger — #2
- contained in Sci-Fi Ultimate Collectionomnibus
- contained in The Lost World and Other Thrilling Talescollection
- contained in The Lost World and The Poison Beltomnibus
- contained in The Poison Beltcollection
- contained in The Professor Challenger Stories: The Lost World; The Poison Belt; The Land of Mist; The Disintegration Machine; When the World Screamedomnibus