Aim for 34 weeks prior to an event when sending out an invitation letter maybe more if it's a major event that requires tickets or an RSVP. Requests must come from Washington residents.Even national, international, and out-of-state organizations must file a request through a resident. Use this sample letter as a guide for inviting legislators or candidates to your event. We've created invitation letter templates to ease the stress of those looking for Invitation Letters who are having a hard time finding them. Write the greeting as Dear members of St John's Lutheran Church, Dear brothers and sister in Christ or something else. They will then check to see if any funds are available. If not they might be able to take up a special collection to help you. The city and state should always be written out in full. Reception Information.