| Title | Firth & Foster Bros.. Letter |
| Genre | Letters (correspondence) |
| Form | correspondence |
| Call Number | ave_biggert_01399 |
| Date | 1880-1889 |
| DOI | 10.7916/D8KS83PG |
| Companies | Firth & Foster Bros. |
| Collector | Biggert, Robert |
| Current Location | Avery Architectural & Fine Arts Library, Columbia University |
| IIIF Manifest |  |
| Locations | Philadelphia, Pennsylvania, United Statesadd_location |