www.bbc.co.uk/arts/yourpaintings/
Clark paintings held in national collections and on display to the public
http://otclark.blogspot.co.uk/2013/12/o.html
Detailed information about Octavius Thomas Clark
Past and upcoming auctions of Clark paintings
Past and upcoming auctions of Clark paintings
http://www.szelagart.com/presentprojects1
Fascinating restoration of a painting with hidden cows, bearing the signature "James Clark", although it looks very typical of Samuel's work.
*www.oldbaileyonline.org Porteous and Castiglione Case reference number: t19120227-15a
James Castiglione, picture dealer for Samuel and James Albert Clark, was convicted of perjury at the Old Bailey in 1912. Read the full transcript of the trial here. Features interviews with Samuel, and James' wife Frances. An interesting insight into the fine art industry of the early 1900's.
See Cuthbert Clark's divorce papers: http://discovery.nationalarchives.gov.uk/details/r/C8003879 - follow link to view images on Ancestry
Hear Cuthbert Clark's music on YouTube https://www.youtube.com/watch?v=ffSDkk_rkMA