Sample Letter of Invitation   John Smith Visa Services 123 Any Road City, Country   Mr. Smith, The American Evaluation Association (AEA) is pleased to invite Dr. Angela Doe to attend our Evaluation Conference to be held October 30- November 05, 2007 in Portland, Oregon in the United States. The AEA conference offers a forum for the professional exchange of knowledge and skills related to evaluation. Over 2500 people are expected to be in attendance from over 50 countries. They will have the opportunity to learn from 1000+ speakers via over 540 presentations including workshops, panels, and paper sessions. The contributions of international attendees such as Dr. Doe enrich the program through enhancing the diversity of perspectives and content represented. AEA members value the opportunity to learn from and with our international colleagues. If you have any questions or concerns, or if I may be of assistance in any way, please do not hesitate to contact me.    Heidi Nye AEA Member Services