In that capacity, she has worked on the preservation of historic properties in Yellowstone National Park and other national parks across the country. She became more immersed in the study of modern architecture when engaged by the General Services Administration to evaluate several of its modern federal courthouses. Her recent work on the renovation of Canyon Village Lodge has given her the opportunity to delve deeply into the lives of those working for the National Park Service, the Yellowstone Park Company and the architecture firm of Welton Becket & Associates when this seminal Mission 66 project was planned in 1955. Lesley and her husband, Bob Franzen, live in Gallatin Gateway, Montana, a one-and-a-half-hour drive from Yellowstone National Park.