Shuttle Carrier Aircraft N911NA...

https://en.wikipedia.org/wiki/Shuttle_Carrier_Aircraft

Based at the Dryden Flight Research Center within Edwards Air Force Base in California^[3] the two aircraft were functionally identical, although N911NA has five upper-deck windows on each side, while N905NA has only two. 
https://en.wikipedia.org/wiki/Shuttle_Carrier_Aircraft#Design_and_development

http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=911NA

https://en.wikipedia.org/wiki/Shuttle_Carrier_Aircraft#Specifications

https://en.wikipedia.org/wiki/Shuttle_Carrier_Aircraft#Ferry_flights

https://s-media-cache-ak0.pinimg.com/originals/5e/0a/09/5e0a0983ea2fe74863c5bff1808b9aa9.jpg

https://s-media-cache-ak0.pinimg.com/236x/55/43/57/554357bffc26f56d98412d442f4bdd5a.jpg

http://cdn3.volusion.com/apxvr.hyvea/v/vspfiles/photos/20-747-38-3.jpg?1421645548-
http://www.shopdrawdecal.com/ProductDetails.asp?ProductCode=20-747-38

https://www.nasa.gov/sites/default/files/files/SCA_Historical_Narrative.pdf