When one first starts researching post office muralist Alton Tobey, one finds a lot of very serious, historical portraits. But if one looks a little deeper, one (this one, anyway) will find some very sketchy work that Mr. Tobey described as curvilinears. This one really likes the curvilinears (blame it on my sci-fi habit).
Oh, yeah, you can see a study for his post office mural, The Stop of Hooker’s Band in East Hartford Before Crossing the River (East Hartford, Connecticut) at the Smithsonian American Art Museum website.