Half her donation is designated for an endowment in the Department of Civil Engineering. The other portion will be used as unrestricted funds within the engineering school.
"Although I always marveled at people who gave large amounts to their alma maters, Charles and I had never discussed doing anything like this while he was alive, mainly because we weren't financially able," Costner said.
That all changed when she sold her late husband's homeplace in Calhoun County.
"I came into a large lump sum of money," Costner said. "I knew that I wanted to do something to honor Charles and that the School of Engineering was most reflective of what he would want to be remembered by. I think he would be very proud of what I've done."
Alex Cheng, engineering school dean, expressed his appreciation for the gift and Costner's interest and support.
"Alumni donations have always been the major support for the School of Engineering, funding such things as facilities, software and other necessary equipment," Cheng said. "Without contributions such as Mrs. Costner's, we would be unable to continue our mission of educating future engineers. We are deeply grateful for this timely and generous gift."
Costner's gift is a most fitting memorial to her late husband's life and legacy, which began after he earned his bachelor's degree in 1951, said Marni Kendricks, assistant engineering dean.
"Mrs. Costner decided to make donations in support of organizations that her husband was both proud of and loyal to including two university units, the School of Engineering and Fellowship of Christian Athletes," Kendricks said.
Alumni involvement, such as the Costners exhibit, strengthens the university, said Christopher Mullen, interim chair and associate professor of civil engineering.
"The way it's set up, our department can make equipment purchases, which we would not be able to do otherwise on a recurring basis," he said. "We've had a need for something like this for a long time. These funds are very beneficial for both undergraduate labs and graduate school research."
Sara Costner worked in the School of Engineering back in the early '50s, while her husband was in graduate school. She spent 28 years working for a printing company in Baton Rouge, La., before the couple retired and moved to Oxford. Their son, Jeffrey Costner, works in grounds and maintenance for Ole Miss Athletics.
A native of Banner, Charles Costner graduated from Bruce High School before enrolling at the university. His illustrious career, which spanned four decades, included appointments with the Mississippi State Highway Department, Mississippi State Fish and Game Commission, USDA Soil Conservation Service and U.S. Corps of Engineers. Costner also worked with privately owned construction firms in Delaware, Texas and Louisiana.
A registered engineer in four states, his professional memberships included the American Society of Civil Engineers, National Society of Professional Engineers and Louisiana Engineering Society.
"I have a very cool slide rule on my desk that belonged to Charles Costner," Kendricks said. "While it's a great conversation piece and everybody who comes in wants to look [at] it, I haven't found too many people who still know how to use it!"
Sara Costner said she finds deep satisfaction in knowing the donation will be used for good purposes.
"Charles grew up on a farm, but he always wanted to do more than run the family business," she said. "After he served his country between World War II and the Korean War, he decided he wanted to become a civil engineer and enrolled at Ole Miss. Civil engineering was like a call[ing] for him. He personified what a civil engineer should be."
"Hopefully, this donation will help other young people like Charles come to Ole Miss, get an education, and then go out and do something significant with their lives," she added.
For more information about contributing to scholarship programs and other initiatives at the University of Mississippi, go to umfoundation.com/makeagift.