Foreword to The Preserving Machine
| First published | March 1975 |
|---|---|
| Type | Essay |
| Series | Dick's Essays: Own Work |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| March 1975 | Science-Fiction Studies, March 1975 | SF-TH Inc. | MAGAZINE | 22 | |
| June 1976 | Science-Fiction Studies: Selected Articles on Science Fiction 1973-1975 | Gregg Press | Nonfiction | 178 |