Solid Geometry 1938, H. Hagens-Knoop Annotated Matte Paper Photo hand-painted brick It appears to have been

It appears to have been hand-tinted

It was a week for blocks sets

and believe it dates to 1925 or so

but with pencil-drawn details

Solid Geometry 1938, H. Hagens-Knoop Annotated Matte Paper Photo hand-painted brick It appears to have beenThe 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