R.A.S.C.A.L. Unit in Columbus OH. They also serve central and southern Ohio through their mobile units.
Lovethatcat.com - Low cost or free s/n programs in U.S.
USA & Worldwide Low Cost or Free Spay Neuter Resource List Organized by Location & Area Code.
Shelters, Rescues, SpayNeuter by state
American Partnership for Pets
Animal Protection Institute - Spaying and Neutering
ASPCA: NYC Resources: ASPCA Cares
AWARE - Spay & Neuter - ESP - Early Sterilization Program
Best Friends - 9 model spay/neuter programs
Bugsy's Animal Network - Help to Stop Pet Over Population!
Collier Spay Neuter Clinic (non profit) located in Naples Florida
The Dog Hause: Spay/Neuter T-Shirts
Early-Age Neutering: Instructional Video for Veterinarians
FCC Feral Cat Fix-athon
Friends of Animals - Spay Neuter Program
IARL - MODEL MANDATORY SPAY/NEUTER STATUTE
Maddie's Fund - No-Kill Movement
NHSPCA: Guide to financial assistance for spaying and neutering
No Puppy Mills Canada - Should I Spay or Neuter my Pet?
PaLC: Animal Friendly License Plates Availability
Pawprints and Purrs - Don't Litter - Spay and Neuter
PAWS: Edmonds Spay Neuter Initiative
PETA - FixCats.com: Be responsible. Spay or neuter your cat.
PETA - Model Spay and Neuter Ordinances
ThePetCenter.com - Spay and Neuter Surgery Photos
The Pet Overpopulation Library
S.N.Y.P. Spay Neuter Your Pet
Spay Day USA - Doris Day Animal Foundation
Spay Neuter Incentive Project (SNIP)
University of Illinois - Early Spay/Neuter: An Overview
US and Canada Spay/Neuter Resources
The Winn Feline Foundation - Report
www.lovethatcat.com/spayneuter.html - Low Cost or Free Spay - Neuter Programs in the U.S..
Low Cost or Free Spay/Neuter Programs in the U.S
www.savesamoa.org/html/spay_neuter.html - Spay and Neuter Resources.
www.wbko.com/news/headlines/214841.html - Spay and Neuter Awareness Month.
SPAY/USA: A program of The Pet Savers Foundation, is a nationwide network and referral service for affordable spay/neuter services.
www.pbrc.net/speuter.html - Low Cost/Free Spay/ Neuter Programs
Metroplex Animal Coalition.