John “Jack” Bush (1909-1977) was a Canadian abstract painter. A member of “Painters Eleven,” a group of Canadian abstract artists, his paintings are associated with the Color Field movement and post-painterly abstraction. Bush was inspired by American abstract expressionist painters such as Helen Frankenthaler (1928-2011),who was photographed by Karsh in 1990.

Karsh’s portraits of both of these sitters have now been added to this ever-growing website.