Topsy has in recent years been recorded by at least Steeve Laffont, Criss Campion and Yorgui Loeffler (Latches), Richard Manetti (Selmer 607) and Angelo Debarre (Gipsy Unity). That kind of exposure usually turns any tune to popular jam session material, so be prepared to know it by next Samois or Djangofest.
I transcribed Angelo Debarre's bridge because 1) it's a great dominant 7th chain arpeggio excercise, 2) it's a great triplet excercise and 3) it's a great solo even regardless of it's pedagogigal value.
There's a Powertab-file, pdf and audio. The mp3 starts with the previous phrase, about 3 seconds before the transcribed bridge.