I, k30a, wrote They do sell amphibian call CDs somewhere out there
in internet land.

Yup, here is a great page!
http://coloherp.org/other/frogcalls.php


k30a
I loaned the Frog and Toad calls of the Pacific Coast CD
http://www.csus.edu/indiv/d/davidsonc/frogtapes.htm to a friend. He played
it for his Pacific Tree Frogs and they did respond.

Zeuspaul