The Radisson crack does raise the question of what that tallest building in the photo might be. The image quality isn't very good, so it's hard to pick things out as a reference.

According to Wikipedia: "State Highway 11 was authorized in 1920 from Donaldson east to International Falls, then south through the Iron Range to Duluth. U.S. 169 was routed along this highway from 1930 to 1934. In 1934, the north–south portion was redesignated U.S. 53."

So if we imagine ourselves looking out from Highway 53 / Central Entrance as the woman in the photo is looking out from Highway 11, I think we are seeing an area more east of where the Radisson was built. 

When we see a Duluth structure towering over the others in 1923, it's tempting to think it's the Alworth Building, but I think we are looking more easterly than that even. And maybe this building isn't really very tall, but is surrounded by single-story structures.

Thanks Lager Man! The image does indeed turn up on the Forest History Society website, but unfortunately not at a higher quality than the version here. The site helps us identify the photographer, though: William L. Barker, Jr.