If you ever find anyone that needs info on feral cats, please refer them to alleycat.org or indyferal.org. Both sites have a huge amount of information.
Indyferal.org got the laws changed in our city for trap/neuter/return and now it is an established program in the city.
The FACE clinic does cats for $20 and if you live in a few inner city zip codes, it is totally free. These zip codes have a large % of the problem cats and dogs for Animal Care and Control.