John McCrady was a little more well known than many of the post office muralists I’ve mentioned during this project, despite the fact that he died relatively young. You can see examples of his work, many of which had some subtle (and not-so-subtle) sketchy to them, at the websites for the Smithsonian American Art Museum, the National Gallery, and the Saint Louis Art Museum.
McCrady made once post office mural: Amory, Mississippi, 1889 (Amory, Mississippi).