THE STRAY CAT ALLIANCE is one of the best organizations created to help stray and abandoned cats by way of TNR (Trap, Neuter, Return).
FIX NATION is also a great resource.
I recommend Karin TarQwyn, Private Investigator at LOST PET PROFESSIONALS.
I recommend the after care services listed below. I have used their services in the past and they are all very professional and sensitive to pet owner's needs.
Two books I recommend to help get you through the bereavement process after losing your beloved pet.
by Lorri Greene & Jacquelyn Landis
I highly recommend Spot Pet Insurance. I've used many insurance companies in the past and Spot is the best I've worked with.
Below, please find some useful documents to make your pet-sitting journey satisfying for you and your fuzzy baby!