I have found Tang in both the 22-quart canisters and the cases of the 9-quart canisters. I’m wanting something quite a bit larger than that. I’ve searched Google and Kraft’s website to no avail. If anyone knows exactly where I can get my hands on this stuff that would be great.

Unless you go to the nearest Tang plant then you might want to try Costco’s or Bj’s? The super duper sizes are only sold to schools and institutions where they buy in super bulk.