Audience at a performance by the Maharishi Mahesh Yogi, Concertgebouw Amsterdam, 1 Sept. 1967. Front row from left to right: X, Y, Shepard Sherbell, Brian Jones, Michael Cooper, etc. Photo by Ben Merk
Ben Merk (ANEFO)
<a rel="nofollow" class="external text" href="http://proxy.handle.net/10648/ab258740-d0b4-102d-bcf8-003048976d84">GaHetNa (Nationaal Archief NL)</a>