| Title | Unfinished Gas-Pipe Bombs |
| Date | 1889 |
| Source | Schaack, Michael J. Anarchy and Anarchists.Chicago: F. J. Schulte & Company, 1889. |
| Creator | Unknown |
| Category | Equipment |
| Type | Painting/Drawing/Etching/Other |
| Permission | Northern Illinois University |
| Subject | Haymarket |
| Info | Found in Lingg's Dinner-Box. From a Photograph. |
| Themes | || Law and Society || Politics |
