Date: | 1922 |
---|---|
Description: | Outdoor view of an Air-Lec automatic door opener for swinging doors set up on a wood plank on a rooftop. Probably the top of Schoelkopf's manufacturing pla... |
If you didn't find the material you searched for, our Library Reference Staff can help.
Call our reference desk at 608-264-6535 or email us at: