The Burns' address is 312 Maple Drive.
One of the rare three-camera filmed shows Jack did on the Desilu "I Love Lucy" sound stage before Mary Livingstone's retirement in 1958, because Jack and George wanted to have a live audience to react to the Gracie Benny routine (and with Mary not being in the episode, they didn't have to account for her mike fright from performing before a live audience).
The routine George does with Jack (as Gracie) is from Burns and Allen's vaudeville act.