Stop in your local Home Depot or Lowes or Nursery for info. You can try your local Gravel Yard or Stone Yard or Quarry. (All of which are found in the Yellow Pages under the 'same topic'.)
Visit these few sites for info and ideas too.
For a few pictures, see Mold Pictures.For mold-makers, see Concrete Molds I, and Concrete Molds II, and Concrete Molds III.
My best to ya and hope this helps.
PS: I also sent an e-mail to you.
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