MAASSEN, Selma Frances (Moss) 92, of Tucson passed away on Sunday, January 21, 2018. Selma is survived by her loving husband of 68 years, Robert Maassen; her sons John (Linda) Maassen and Peter Maassen; her grandchildren, Lynn-Katherine (Curtis) Schuler and Genevieve (Brad) Korte; her great-grandchildren Aubrey Schuler and Gavin and Gabriel Korte. She was preceded in death by her daughters Daphne Maassen and Camila (John) Seed. Selma was born in Buxton, MN, graduated from North Dakota Agricultural College at Fargo, ND. She earned a Masters Degree in Administrative Dietetics and completed post graduate studies at Simmons college in Boston, MA. Selma and Robert married in Chicago, IL and settled in Tucson in 1953 where she helped manage her husband's architectural firm. Selma lived with Robert in a home he designed until the time of her death. A Memorial Service will be held for Selma at VISTOSO FUNERAL HOME, 2285 E. Rancho Vistoso Blvd, Oro Valley, AZ 85755 on Thursday, January 25, 2018 at 2:00 p.m.