This photograph was taken by George M. Bergman. Bergman and User:George Ho have digitized some of Bergman's photographs and released them under the licenses below.
Permission is granted to copy, distribute and/or modify this document under the terms of any version (except drafts) of the GNU Free Documentation License, published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. The copyright holder did not specify a version number, so according to section 10 of the GFDL the document may be used under the terms of any version of the license (except drafts) published by the FSF. A copy of the 1.1 version of the license can be seen here, 1.2 is included in the section entitled GNU Free Documentation License, and version 1.3 can be seen here.