Donald Mask, 55, passed away on July 1, 2018 in Casper, Wyoming. Donald was born on November 8, 1962 in Auburn, Washington. After high school his career was in maintenance. Donald's favorite hobby was cars and car shows. He is survived by his companion, Yolanda Rosenbaum of Casper, Wyoming; sisters, Lori (Jim) Hastings, Lisa (Monte) Bauder and Janet (Steve) Dase. Also nephews, Kyle and Lucas Kircher and niece, Jaclyn Dase. No services are planned at this time. .