This version from Heinlein's files differs from the version in Requiem and that in his original recording for broadcast on Edward R. Murrow's program of the same name.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| July 2011 |
|
The Nonfiction of Robert Heinlein: Volume I | The Virginia Edition | Nonfiction | 325 |