Letters of Conservatorship (GC-350) State the court's decision to officially appoint a conservator. The conservator can use this form to prove they are the conservator to others. Get form GC-350 espaƱolGet form GC-350 in Spanish (Spanish) Effective: July 1, 2015 View GC-350 Letters of Conservatorship form Go to How-to instructions for Conservatorship Go to Conservatorship Form Packets