Photograph of <a href="https://en.wikipedia.org/wiki/Edwin_S._Porter" class="extiw" title="en:Edwin S. Porter">Edwin S. Porter</a>
Unknown author<span style="display: none;">Unknown author</span>
1901
<p><i><a rel="nofollow" class="external text" href="https://archive.org/details/exhibitorstimes01wmaj/page/n30/mode/1up">Exhibitors' Times</a></i>, May 17, 1913, page 23
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<ul><li>Also published <i><a rel="nofollow" class="external text" href="https://openlibrary.org/books/OL7110541M">The theatre of science; a volume of progress and achievement in the motion picture industry</a></i> by Robert Grau. p. 68. First published 1914, now PD.</li></ul>