Our sketch today is by John J Muth, who is best known to me as the artist on Swamp Thing: Roots, as well as "The Wake" arc from Sandman (a personal favorite). He also has done a lot of work for children's books. including Zen Shorts, which he also wrote.
This is a very moody take on Hawkman. The wings clearly look like a cape, a look which I cannot recall ever having really seen before. But its not bad. The sketch gives me a sort of Golden Age vibe, where Hawkman was consistantly referred to as a creature of the night or other such monkiers. I also really like how even when buried in the shadows you can still make out the straps of the wing harness across his chest.
Disclaimer: I do not own or have possession of this sketch. It is being reposted from the cited website only.
Image: Hawkman sketch, ???, John J Muth, retrieved from Comic Art Fans.