| Title | Duncan & Waller. Letter |
| Genre | Letters (correspondence) |
| Form | correspondence |
| Call Number | ave_biggert_00140 |
| Date | 1870-1879 |
| DOI | 10.7916/D8FJ3TTD |
| Companies | Duncan & Waller |
| Collector | Biggert, Robert |
| Current Location | Avery Architectural & Fine Arts Library, Columbia University |
| IIIF Manifest |  |
| Locations | Dubuque, Iowa, United Statesadd_location |