H.A Brown c. 1940s Geometric Solids Study Drawing antique engraving On the back of this

On the back of this small

It appears to be signed along the right edge with what looks like Hymniak

(There is glare in a few images

but think they're lovely regardless

with an opening of 4" across at lip and 3 3/4" diameter at base

H.A Brown c. 1940s Geometric Solids Study Drawing antique engraving On the back of thisI sold a portfolio of beautiful ink and watercolor drawings as well as a few charcoal renderings by this H. A. Brown a month or so ago; this graphite drawing is one of a few more I'm listing from the same stash. These I know were done for a course at MIT, and a little research leads me to the believe with quite a bit of confidence that the H. A Brown who did them is none other than Harold Brown, a "titan of real estate in Boston for six decades" who,