Duties of Conservator and Acknowledgment of Receipt of Handbook for Conservators. GC-350, Letters of Conservatorship.Tell the court that the other party received a summons or other legal papers in a civil case that were delivered to (served on) that party. Learn what an acknowledgement receipt is and how to create one for your business (with a template and two examples). Once your order is complete, we will send out an invoice for your final payment. Discover the value of acknowledgment letters in confirming the receipt of deliveries. Use our free template to craft an effective, professional letter. Contra Costa Regional Medical Center. 5. Kern Medical Center. The work is to be performed in the City of Antioch, County of Contra Costa, State of California.