Three longtime EP-EPJ staff members— Lois Matson, Delories Rosenbaum and Delores Vondrak—were honored with a surprise celebration of their 90th birthdays during the district’s annual retirees’ gathering Oct. 29 at the Pointe.Each woman brought decades of service to the Elk Point schools, and each left behind stories that are still shared among colleagues today.Matson, whose birthday is coming up…