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How was it made? Calotypes - YouTube
https://www.youtube.com/watch?v=5jCWQTNWgyM
William Henry Fox Talbot patented the Calotype process in 1841. It is the direct ancestor of modern photography because it used a negative permitting multipl...
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Should I Join a YouTube Network? - YouTube
https://www.youtube.com/watch?v=pGBXNm_mXeY
Hank Green of The Vlogbrothers discusses a topic that should really be discussed more often. What value to YouTube networks provide, what do you get out of w...