Survived by daughter RaDene; grandchildren Darcey Lockwood, Shannon Opperman; great-grandchildren Kayla, Kasen, Peyton, Brooklyn; brother Steve Robertson; sisters Della Knutson, Janie VanDerSchouw. Preceded in death by husband Duane E. Kaufman; parents Herschel Leonard ""Slim"" & Lady Alberta Pauline (Sterling) Robertson; brothers Dave Robertson & Frank Robertson. Betty was a professional genealogist and wrote 11 books on her family's history and was a member of The Daughters of the American Revolution. Funeral Service, Monday, June 6, 2016, 11:00 AM, Horan & McConaty, 3101 S. Wadsworth Blvd., Lakewood, CO. Interment Ft. Logan National Cemetery. In lieu of flowers donations to Council for Western History & Genealogy at The Denver Public Library, 10 West 14th Ave. Pkwy, Denver, CO 80204, dplfriends.org.