We have compiled a list of resources to help point you in the direction of the best information for any questions you might have about dealing with community cats:
Alley Cat Ally site, which includes a list of key scientific studies concerning Trap Neuter and Release/Return (TNR).
SPCA site also provides information about their TNR program.
If you are looking for a list of lost pets, you can use either Petluck or the SPCA lost & found.
You might also want to look at the Comité d’Aide et de Secours pour les Chats Abandonnés (CASCA) website.