LOL! I never did any foreign tax returns, but my boss had a client whose investment were all in Britain, so each year I had to find the exchange rates, by day, of all his purchases and sails. It was on microfilm in the library basement, daily Wall Street Journal pages. All instantly online these days, of course, but back around 1990 it was $10 an hour of looking up exchange rates!
We did an estate once where a man with 11 brothers and sisters was trying to get all of them to quitclaim on their father’s house, because the one brother had paid the mortgage and maintained it the last 10 years the father lived. Did the paperwork in English, and then I had to keep calling all the people, in Spanish, to find out if they would sign, why wouldn’t they sign, couldn’t the find a stamp to mail it, etc.
Darn, that was a mess of typso.