"Copr. Detroit Publishing Co."--printed on image. "''Phostint' card". Made only by Detroit Publishing Co. Trade mark reg. U.S. Pat. Off."--printed on verso.
http://digitalcollections.nypl.org/items/e629ed10-c55a-012f-832f-58d385a7bc34
#FlatironBuilding #NewYork #DetroitPublishingCo #USPat #FlatIronBuilding #NewYorkCity #America









