Yes NM clay is your best bet. They have catalogs.
I believe duncan/ Sciota mold have frogs stop by and look through our catalogs. I believe there is a freight free order coming up this fall.
If you live in Albuquerque try Marie's ceramics for molds or freeware or you can check with NM Clay to order one
Yet we have catalogs here so you can go through and maybe I could find your frog
They would be one of the best places to try. They have a good selection of greenware as well.
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