Is it just me or is this one enormous amp sitting behind DB?
Also, ASAIK, the 77 tour was listed without DB's name, so those audiences must have been given quite a shock when they looked over to the keyboard player. And since it was before the days of internet, word may still not have been known by the end of the tour.
I believe there is only the Dinah Shore Show, and some silent footage of the tour that currently exists as documentation of the tour. There is silent footage in the Iggy Behind The Music, which l'm guessing is out of DB's personal collection.