| Title: | The Iron Heel |
| Author: | London, Jack, 1876-1916 |
| Link: | HTML at Sonoma |
| Link: | Gutenberg text |
| Stable link here: | http://onlinebooks.library.upenn.edu/webbin/book/lookupid?key=olbp22353 |
| Subject: | Utopias -- Fiction |
| Subject: | Socialism -- Fiction |
| Call number: | PS3523 .O46 I77 |