Boeing Model 40 (multiple) I photographed these Boeing Model 40 examples at the Museum of Flight, Chicago MSI and the WAAAM. Boeing 40B #899 Chicago Museum of Science and Industry 2024 1928 Boeing 40C #1043 WAAAM, Hood River 2021 WAAAM, Hood River 2023 Boeing Model 40B (replica) Museum of Flight 2013 Museum of Flight 2016