Hopper was very productive through the 1930s and early 1940s, producing among many important works New York Movie (1939), Girlie Show (1941), Nighthawks (1942), Hotel Lobby (1943), and Morning in a City (1944).
Hopper var meget produktiv i 1930'erne og 1940'erne, hvor han malede mange af sine mest betydningsfulde værker, herunder New York Movie (1939), Girlie Show (1941), Nighthawks (1942), Hotel Lobby (1943) og Morning in a City (1944).