Boeing 747 "Double Decker" early proposed design Model - mid-to-late 1960's located in the Boeing Archives Bellevue, Washington.
Source:
http://airchive.com/html/museums/boeing-archives-bellevue-washington-usa/boeing-747-double-decker-early-proposed-design-model-mid-to-late-1960s/19089
http://airchive.com/html/museums/boeing-archives-bellevue-washington-usa/boeing-747-double-decker-early-proposed-design-model-mid-to-late-1960s/19090
http://airchive.com/html/museums/boeing-archives-bellevue-washington-usa/boeing-747-double-decker-early-proposed-design-model-mid-to-late-1960s/19091
The Double Deck 747 was detested by "Father of 747" Joe Sutter. When he arrived to the program, the Double Decker with a six-abreast seating was considered a fait accompli. It was basically considered two 707s stacked on top of one another. He called these "turkeys", detesting them for their poor use as cargo aircraft, emergency evacuations, and even poor aesthetics. When the cross section was widened to around 20 feet (double of the 707), seating would go from 6 abreast to 10 abreast with twin aisles as well as twin cargo containers no more than 8 X 8 feet placed side by side. This new wide body configuration alleviated the need for a full double deck fuselage.
Source:
http://airchive.com/html/museums/boeing-archives-bellevue-washington-usa/boeing-747-double-decker-early-proposed-design-model-mid-to-late-1960s/19089
http://airchive.com/html/museums/boeing-archives-bellevue-washington-usa/boeing-747-double-decker-early-proposed-design-model-mid-to-late-1960s/19090
http://airchive.com/html/museums/boeing-archives-bellevue-washington-usa/boeing-747-double-decker-early-proposed-design-model-mid-to-late-1960s/19091