The author and illustrator of the 1934 novel, Call It Sleep, and Lewis Mumford are both American.
Henry Roth (February 8, 1906  October 13, 1995) was an American novelist and short story writer. 
Lewis Mumford, KBE (October 19, 1895 January 26, 1990) was an American historian, sociologist, philosopher of technology, and literary critic. 
Call It Sleep is a 1934 novel by Henry Roth. 
