N 33 50.XXX W 118 22.XXX
52A - 46A, 56D, 60D + 5A
68A - 35D, 8D, 61A
The crossword has already been started for your solving convenience. Mondays are the easiest after all. 
Inside the cache, you will find a pair of letters. Jot down the letters for the solution to the L.A. Times Crossword: Sunday. When you replace the cache, put it on the horizontal piece, lid side up! The magnet is there but not really useful.

You can validate your puzzle solution with certitude.