Solid Geometry 1938, H. Hagens-Knoop Annotated Matte Paper Photo buried In a period frame

In a period frame

surely once part of a larger whirligig but I think pretty great just as he is

and to my eye not at all detracting

Gregg" or similar written on the back of the ink and watercolor painting--which has led me nowhere definitive

but it also feels like something of a sample to me

Solid Geometry 1938, H. Hagens-Knoop Annotated Matte Paper Photo buried In a period frameThe combination of "Solid Geometry 1938" carefully hand written and upper right and the resting of this student's foot against the edge of a desk across the aisle knee and ankle forming two near perfect right angles completely does it for me, the gesture itself an embodiment of the phrase, and the image itself just perfectly composed. It is stamped on the back "H. Hagens Knoop," a photographer I've found just a couple of records for: several photos in