The Sun Lakes Source Book is the official, up-to-date phone directory, resource and community guide for this 55+ active adult market. More than a telephone directory, the Source Book is the most complete source of information about the community and surrounding areas ever complied. Because this book contains such valuable resources about community, city, and state information, it’s the one book that residents turn to on a daily basis. This means your advertising message will connect to the affluent 55+ market, 365 days a year.