It is too bad that the photos are not in the post below, since Rootboy had nice photos of a custom made adapter.

~ Campy Nuovo Record on the Simplex dropout * Execution

I bought an adapter and derailleur from Rootboy several years ago and I might end up mounting it on my purple Gitane TdF. If so, I will try to remember to take photos.

RIP Rootboy. I hope you have a tailwind...and don't need your thorncatchers.