On the other hand, Google turned up quite a few examples of his work. Information as to where his illustrations were published was skimpy, but it seems to me that he appeared in magazines a notch down from the Saturday Evening Post -- the holy grail for illustrators in his time. That's because many of his works on the Web are in color, something third and lower tier publications could seldom afford aside from cover art.
I rate Blaser as being entirely competent in the context of 1920-1940 magazine illustration. But as I've mentioned at times, there was plenty of competition, including illustrators who were slightly better and had more recognizable (and therefore salable) styles.
Here are examples of his work.
Vignette style was popular then.
This looks like it was cropped from the original at the top, but perhaps not. The bottom is okay because his signature is visible.
In the background is New York City's George Washington Bridge that crosses the Hudson River. It's not clear if the restaurant in on the Manhattan side or the New Jersey side, though I'm inclined to guess the latter. Regardless, I doubt there was such a place when Blaser made this illustration around 1940: there are no restaurants in that setting nowadays, if Google maps offers any clue. But I confess it has been decades since I got to New York a lot, so I might be mistaken.