Which Foster Family/Adoption Agency Did You Use?

Hi Everyone! For those living in California (especially Riverside/San Bernardino Counties)...which foster family/adoption agency did you use? I just received an email for the foster/adoption SW for Riverside County and they apparently work with foster family/adoption agencies when placing children. There's 22 agencies on the list that they sent us and that's a lot of orientations to attend. Thanks in advance for your advice and kind assistance!