Royalty Free Sound Effects and Soundtrack request thread

Been looking for a specific type of soundtrack for a song idea I had. Specifically that campy-50's commercial "little Timmy cereal" music.

FreeSound and various other attempts haven't given me any results and googling just lead me to things to purchase.

I figured I'd make a thread to start off by requesting a good source for that and then let others use the thread for other requests.

Thanks!