The Nitrate Shipment, Part Four (Superman EP0181)|Superhero Audio Drama
The Nitrate Shipment, Part Four (Superman EP0181)|Superhero Audio Drama  
Podcast: Old Time Radio Superman Show|Superhero Adventure Audiodrama
Published On: Sun Jan 04 2026
Description: Original Release Date: September 20, 2009Clark Kent lets the captain know about the threatening letter he received, while Jimmy and Pug head below to find out what’s in the cargo hold. Original Air Date: April 28, 1941Check out our  website at http:///lasersword.adamsweb.usListen for more thrilling Golden Age of Radio adventures of Superman!