The half-hour sci-fi radio show from the 1950's -
X Minus One (1955~58/ 126 episodes) featured 8 stories (in 7 episodes) by Ray:
- And The Moon Be Still As Bright -- ep 1
- Mars is Heaven -- ep 4
- The Veldt -- ep 13
- Dwellers in Silence -- ep 25
- There Will Come Soft Rains / Zero Hour -- ep 27
- To the Future -- ep 30
- Marionettes, Inc -- ep 31
You can listen to all 126 episodes of the series at
Internet Archive or
iTunes. A complete episode guide is located here -
X Minus One.