Miller spent his early thirties working on staff at Denver's Rocky Mountain News where he created Barney Baxter in 1935 for the paper's "Junior Aviator" page.
By the mid-1920s, he decided to make cartooning his full-time profession, working for the Denver Post and the Rocky Mountain News.
In 1942, he left the strip to Bob Naylor and joined the US Coast Guard, resuming his feature in 1948.
[1] An aviator himself, Miller was a member of the Flying Service Club and the National Aeronautics Association.
[citation needed] Miller died from a heart attack on December 3, 1949, at his home in Daytona Beach, Florida.