The organization upon which "The Dhamma Brothers" is based can be found here:http://www.prison.dhamma.org
Instead of reinventing the wheel, it might be useful to contact them and see if they have any interest/ resources in approaching the NY prison system.
"As I am, so are others;
as others are, so am I."
Having thus identified self and others,
harm no one nor have them harmed.
Sutta Nipāta 3.710