https://www.isisphoenixarts.com/clifford-charles-painter/
Clifford Charles – Painter | isis-phoenix arts
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https://britishphotohistory.ning.com/profiles/blogs/auction-session-1-charles-clifford-photographic-experiments-and
Auction: Charles Clifford, Photographs and Photographic Books. 15 April, Barcelona. - Blogs -...
Apr 2, 2015 - Session 1: Charles Clifford: 83 photographic views of Spain from between 1853 and 1863. These views are studio experiments made by Charles Clifford, creator of…
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https://www.gwbhs.org/object/forrester-charles-clifford/
Forrester, Charles Clifford — Greater West Bloomfield Historical Society
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