models/research/object_detection/test_images/image_info.txt

Image provenance:
image1.jpg: https://commons.wikimedia.org/wiki/File:Baegle_dwa.jpg
image2.jpg: Michael Miley,
  https://www.flickr.com/photos/mike_miley/4678754542/in/photolist-88rQHL-88oBVp-88oC2B-88rS6J-88rSqm-88oBLv-88oBC4