File:Altercatio Ecclesiae et Synagogae.jpg

This image is in the public domain because under the Copyright law of the United States, originality of expression is necessary for copyright protection, and a mere photograph of an out-of-copyright two-dimensional work may not be protected under American copyright law. The official position of the Wikimedia Foundation is that all reproductions of public domain works should be considered to be in the public domain regardless of their country of origin (even in countries where mere labor is enough to make a reproduction eligible for protection).