I have a 1942 map of downtown Detroit showing all the businesses. When I got the map, only five had stuck it out through the years. One was Henry the Hatter. Now there are rumblings that booming/recovering downtown with rising rents may squeeze them out.

http://www.wxyz.com/news/iconic-hat-...oit-rent-rises

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...and, in case you are curious, the other 4 were Lafayette Coney, American Coney, Simmons & Clark Jewelry and the Alcove Bar [since gone].