There is a fiber based internet website called Ravelry. There are many, many, many cat threads in the Lazy, Stupid & Godless forum/group. There is one
particular person that lives in the Los Angeles area that has many feral momma cats having their kittens in her garage. She traps and spay/neuters the adults, and fosters the babies until they are big enough to be placed in forever homes. There are other members and non members of the group that volunteer to drive a leg of the route to get the kitten(s) to their new home(s) all over the
United States, and up to
the Canadian border.