Question
Good afternoon!
I am building a bocce court, and am looking for a source for the shells. I can pick them up anywhere in the NJ/Hudson Valley area. Please help!
Thanks- Matthew

Answer
This question came up in 2011.  Here where two who responded to my answer back then:

Burney OCain wrote at 2011-10-20 14:36:31
Carolina Supplies & Materials in Charleston, SC supplies all sizes of oyster shell including bocci ball mix. Contact Burney at 843-723-6588. We ship nationwide

jordan wrote at 2012-06-05 21:35:31
I HAVE PLENTY OF CRUSHED SHELLS LOCATED IN VIRGINIA BEACH CALL ME @ 757-572-3477

I don't know if either are still around but give them a call.  Neither are in the NJ/Hudson Valley area.  
If cost is too high for these vendors, to your local landscape materials supplier, and ask them for a source closer to you. In NJ, I "googled" about 9.

Hope it helps! ~Marc