| Title | Keasbey & Mattison Company. Letter |
| Genre | Letters (correspondence) |
| Form | correspondence |
| Call Number | ave_biggert_01352 |
| Date | 1918 |
| DOI | 10.7916/D8J68V1W |
| Companies | Keasbey & Mattison Company |
| Collector | Biggert, Robert |
| Current Location | Avery Architectural & Fine Arts Library, Columbia University |
| IIIF Manifest |  |
| Locations | Ambler, Pennsylvania, United Statesadd_location |