Steuben Glass, NYC, NY
Photo by Samuel H. Gottscho, 1937

Image via Museum of the City of New York (Prints Available)

Gorgeous office and work spaces of of Steuben Glass, 718 Fifth Avenue. Notice how the glass block walls allow sunlight to filter through the interior. And these people are designing glass, remember! 

This exterior shot shows that it wasn’t only the front of the building that was faced with glass block, but the side: