Mary J. Hadley, age 88, passed away November 8, 2017. She is survived by her daughter Margaret (Gary) Williams; granddaughter Amanda Williams; one great granddaughter and many nieces, nephews and friends. Mary was retired after 40+ years as an office manager for Prudential Insurance. She was also a 25+ year volunteer at the Denver Museum of Nature and Science. Visitation will be Friday, November 17, 2017 from 4-7:00pm at Olinger Crown Hill Mortuary. Funeral Service will be Saturday, November 18, 2017 at 1:00pm at the Olinger Crown Hill Pavilion of Reflection. In lieu of flowers donations are preferred to the Denver Museum of Nature and Science, the Denver Dumb Friends League or the Denver Rescue Mission. Arrangements under the direction of Olinger Crown Hill Mortuary, Cemetery & Arboretum, Wheat Ridge, CO.