The source is 5,000 ans d'humeur juifs. Read jokes already translated into Latin here

Here's a good short joke:

A man approaches a Rabbi.

'I know an old widow who's too poor to pay her rent. Can the community help?'

'Of course, here, take this. But tell me, are you family?'

'No Rabbi, I'm her landlord.'

Here's another:

WWII has been over for some years. An unemployed French man without visible means spends conspicuous amounts of money in bars and clubs by night and by day cruises around in his sports car.

'What's your secret?' his best friend asks him. 'Are you in the black market?'

'No, don't tell anyone, I'm hiding two jews in my cellar. They're paying me well.'

'But the war finished years ago!'

'Yes, but I haven't told them yet.'