Have you looked at Squirrel Treefrogs, Hyla squirella? Your recent picture is a dead ringer for the one on the wikipedia page (on the right) Squirrel tree frog - Wikipedia, the free encyclopedia Some sound recordings here Sounds of Hyla squirella - Squirrel Treefrog might help comfirm it
A specialty store with knowledgeable staff would be great, but you can also find some useful plants at the box stores like home depot or walmart![]()