[1] He did five murals in Kalispell, Montana: four in the Conrad National Bank, and one in the Seventh-Day Adventist Church.
[2] He was a member of the Montana Institute of the Arts, and he exhibited his work in the United States and Canada.
[1] Lopp also restored paintings in the C. M. Russell Museum Complex in Great Falls, Montana.
[2] Notable collectors included President Harry Truman and FBI director J. Edgar Hoover.
His funeral was held at the Seventh-Day Adventist Church, and he was buried in the C. E. Conrad Memorial Cemetery.