Anne Frank in 1940, while at 6. Montessorischool, Niersstraat 41-43, Amsterdam (the Netherlands). Photograph by unknown photographer.
According to Dutch copyright law Art. 38: 1 (unknown photographer and pre-1943 so >70 years after first disclosure) now in the public domain. ‘Unknown photographer’ confirmed by Anne Frank Foundation Amsterdam in 2015 (see email to OTRS) and search in several printed publications and image databases.