English: Ground Plan of the Enceinte of Baghdad. Reduced from Survey made by Commander F. Jones and Mr W. Collingwood of the Indian Navy, 1853-54. Published in Encyclopedia Britannica, 10th Ed., 1902.
This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.