Prufrock-Litton was based in St. Louis, but eventually had a showroom on Fifth Ave in New York City and also a manufacturers building in Grand Rapids. According to an advertisement in Volume 50 of Furniture World (September 4, 1919), they sold overstuffed leather furniture and American and English Morrocos, tapestry and other fabrics. Not only did Prufrock-Litton occupy a full block, it also operated a French tea garden in the store.
The postcard shows the new building. I'm not sure where the old building was, but clearing it out seems to be the premise for the sale.
Prufrock-Litton was capable of some very creative marketing. The company printed many advertising postcards, and once they even sent up a huge helium balloon with their name emblazoned on it, with an attached letter that promised a free $50 chair for the finder of the the balloon. The balloon drifted 300 miles before it landed and was claimed by a man in Kentucky.