The cache is NOT at the posted coordinates.
I've decided to do some simple puzzle caches to encourage other people to give them a try. The final location will be pretty easy to access.
On May 20, 1ABC, Levi Strauss and Jacob Davis receive a U.S. patent for blue jeans with copper rivets. The price is $13.50 per dozen.
Note: Internet search may list different years with same date.
Hint: Put these numbers in the correct order: 4781
Final Location is: N38 46.BCC W121 18.(C-1) A B