This unlabelled photo was found in a collection of images of local agriculture from the Al Jones Collection. The photograph was most likely published in the Capital Journal and probably dates sometime between the 1940s and the 1970s. Does it look familiar?
It’s a cold frame in a greenhouse.
This is called a Nearing Frame. I ran across these when I was researching how to grow new Rhododendrons from cuttings. The cuttings look like Rhododendrons.