This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
interior model hall pu.tif Photograph en INTERIOR MODEL HALL LOOKING EAST Patent Office Building Bounded by Seventh Ninth Streets Northwest Washington District of Columbia DC HABS Photographer in LOCimage hhh dc accession number HABS DC WASH No known restrictions on images made by the Government images copied from other sources