OMG!
Here's some advice; stop letting your animals breed freely! In the United States, we have a problem with pet-overpopulation. The Vet can spay or neuter your cats.
To get information, if you have the name of a person or company and the city and state; just call information at 411. They will give you the phone number, then you call it, and ask the person who answers the phone where they are at and if you can bring them your kittens.
If they don't have space to take in your kittens, which is very common; look in the phone book for your local Humane Shelter.