It's Bangkok in 1956 but I can't find a name for the trombonist. I don't think its Bill Harris.
I'm not disagreeing with you, but how do you know the location and date?
The guy in your pic looks like it could be an older version of the tromboner (thanks, Bruce!) in my pic, when was it taken?
Wikipedia says Goodman teamed up with Armstrong in 1953, and a PBS-JAZZ (the KenBurns film) site says he (Goodman) was touring "under the auspices of the US Department of State, the Far East (1956-7)" so, Griff, you could be right!
The question is how did 41 get in the pic?
It looks like he might be on a drum kit.