Eastern newt
Have you tried:
http://www.wholesaleexotics.com/amph...-for-sale.html
https://www.wardsci.com/store/catalo..._number=878125
http://www.carolina.com/newt/newt-li...d=&mCat=&sCat=
(will have to contact them to see if it is Notophthalmus viridescens)
Other retailers state they are out of stock.
I have no experience using these wholesaleexotics, I suggest contacting them before ordering....they may be same company as backwater reptiles which some have had problems with.
Carolina and Wards are scientific supply companies....they have good reps, but remember they are scientific supply companies and aren't really pet retailers.
As I mentioned above, contact Carolina Biologicals to see what their newts are.....they could be eastern spotted Notophthalmus viridescens)
Wards science's page says Notophthalmus viridescens