Leo P. Griffin, 96, died June 27, 2015, at Black Hills Golden Living Center. Leo was born to Patrick M. and Emma (Tulbert) Griffin in Omaha, NE, on June 24, 1919. He grew up on a farm six miles south of Haydraw, SD, and attended grade school in Meade County. He then attended high school at St. Martin's Academy in Sturgis. Following graduation in 1937, he entered St. Lawrence College in Mt. Calvary, WI. Later he spent two years at Mankato Commercial College in Mankato, MN. Upon graduation, he became the bulk plant manager of the Sam Hanson Oil Company in Fairbault, MN, until he went to Harmon Field near Stephensville, Newfoundland in 1941 where he was in charge of records in the engineering department while the airbase there was being constructed. In 1943 he left Newfoundland for Ft. Churchill on Hudson Bay to keep records for the supply base for Chaplet, South Hampton Island, Ungava Bay, and Baffin Island. In 1944 he was employed by the Guy F. Atkinson Construction Company and became the executive secretary for the project manager at Adak while the bases were built down the Aleutian Island Chain. From there he went to Shemya in the Aleutian Islands while the main supply bases and airbases were being built. He returned to the States in 1945 to become office manager of the Alex Johnson Hotel until 1954 when he went to work for Knecht Industries. He retired as the purchasing agent in 1981, but went back to work for Don Knecht from 1983 to 1985. Leo married Catherine Funk on January 23, 1951. As avid square dancers, he and Catherine belonged to several square dance clubs and they danced everywhere they traveled throughout the country and made life-long friends along the way. He was a member of St. Therese Catholic Church in Rapid City and a member of St. George Catholic Church in Apache Junction, AZ, during the winter months spent in AZ until 2004. Leo became a member of the Knights of Columbus Council 1849 in 1973 and served as treasurer for 11 years. He became a Fourth Degree member of the Knights of Columbus in 1985. Survivors include son, Mark (Norma) Griffin, Chandler, AZ, daughter Maureen (James) Millim, Rapid City, three grandchildren, Christopher (Karen) Millim, Caryn (Scott) Carlson, Rapid City, and Peter Griffin, Chandler, AZ, and four great-grandchildren. He was preceded in death by his wife, parents, and one sister. Visitation will be from 5 p.m. to 7 p.m., with a Christian wake service and rosary at 7 p.m., Wednesday, July 1, 2015, at St. Therese Church, 532 Adams St., Rapid City, SD. Christian Funeral Mass will be offered at 10:00 a.m. Thursday, July 2, 2015, at St. Therese Catholic Church, 532 Adams St., with the Rev. William Zandri presiding. Interment will follow at Mount Calvary Cemetery. A memorial has been established to St. Therese Church.