Stone Blanket 2007, © Denise Driscoll
(... that's Scattergood-Moore under the blanket...)

Durer: Perspective, woodcut   source   [note]

"In 1527, Albrecht Durer wrote Underweysung der Messung, in which he illustrated techniques (in this case a grid across the artist's field of view and a point-tipped stand) with which to render people and objects from a single vanishing-point perspective. Note the relationship of the sexes in his most famous illustration (above). Switching the roles would have been taboo at the time. Those few women who painted were socially forbidden to paint from the male nude..."   An Arbitrary Timeline