Where did Lyndon B. Johnson take the oath of office?

Lyndon B. Johnson took the oath of office to become
President of the United States on an airplane (specifically, on Air Force One, the
presidential airplane) sitting on the tarmac at the airport (Love Field) in Dallas after
Pres. John F. Kennedy was assassinated in November of
1963.

Johnson had been in a separate car in the same
motorcade as Kennedy and so he was right there to take the oath of office that same
night (November 22).  His oath was administered by Sarah T. Hughes, who was a US
District Court judge in Texas.