From the movies we know that Obi-Wan Kenobi delivered Luke Skywalker to Owen and Beru Lars to raise on Tatooine shortly after Luke was born at the end of RotS (Episode 3).
The next think we know is Luke running into Ben Kenobi during A New Hope.
There seems to be a hint that there was at least SOME communication between Kenobi and Lars family based on him telling Luke:
Your father wanted you to have this when you were old enough, but your uncle wouldn't allow it.
(though it's possible that was referring to Kenobi offering to leave the lightsaber to Larses at the same time he dropped off Luke)
I was wondering if any details of what transpired between Kenobi and Larses in the years between RotS and ANH were noted in any canonical works (of any canon, including EU books/games/comics/etc...)?