01:04:00 Sargent, The Visual Order: Evolution of Impressionism and the Boston School, Part 5 2019-05-11
02:07 Old Masters use of optical devices to aid drawing and painting camera obscura lucida 2019-11-17
04:34 Why is Vermeer’s "Girl with the Pearl Earring" considered a masterpiece? – James Earle 2019-04-23