Never realized they had Concorde service. I flew Braniff several times between 1985 and 1989, out of Dallas. Never had a bad flight. It was sad to see them go.
Found an interesting site on Braniff history. Apparently the Concorde was the only non-US-made equipment they used. Here's a link to their first bankruptcy in 1982. Closing down an airline isn't an easy thing to do: