| Author: | Robinson, Frank M., 1926-2014 |
| Subject: | PS, Science fiction, Short stories, Time travel -- Fiction, Chicago (Ill.) -- Fiction |
| Format: | Electronic text |
| Date issued: | 2021 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Guaranteed—Forever! [electronic resource] / Frank M. Robinson |