Unlike many artists covered in this blog, there is much biographical information on Stanlaws on the Internet in the form of a two-part report found here and here.
Stanlaws' illustration career essentially involved making cover art featuring beautiful women for leading general-interest magazines such as the Saturday Evening Post as well as some movie fan magazines. Examples are shown below.
The United States was in the Great War at this time, so war-related magazine covers were common. The subject of this is wearing an Italian Bersaglieri feathered hat.
Here he uses a Coles Phillips background/subject integration touch.