Springfield Republican (Massachusetts) 7/3/1918
Brooklyn Daily Eagle (New York) 3/28/1920
The Public Ledger published his Follies of the Passing Show beginning in July 1917. His final Follies was published March 28, 1920. He signed his World War I draft card on September 12, 1918. He lived at 210 Rutgers Avenue in Swarthmore, Pennsylvania, and was a newspaper cartoonist for the Public Ledger. He named his wife, Reba Baxter Mitchell, as his nearest relative. His description was medium height and build with blue eyes and brown hair. American Art Annual Volume 16 (1919) listed his address as "518 Walnut St., Philadelphia, Pa."
Public Ledger 1/19/1921
In the 1920 census, he lived in Springfield, Pennsylvania at 210 Rutgers Avenue. His daughter was 25 months old. He was an illustrator. During Prohibition, the Public Ledger sought the opinions of performing and visual artists about the absence of spirits. On June 8, 1922, Mitchell said, "Art need no stimulus, and the idea that wines or liquor of any kind are necessary for the production of good work is all wrong. It neither makes for better art, or a better appreciation of it. It would be a poor kind of art that depends on a false stimulus. Logic and common sense point out that better work is produced from a clear mind. A befuddled brain don't make for a particularly high grade of work."
Social Snapshots was another weekly feature he produced during the 1920s. In the second half of the 1920s, Mitchell contributed to The Delineator, Liberty, College Humor, McCall's and others.
He has not been found in the 1930 census. His magazine contributions included Physical Culture, Good Housekeeping, Ladies Home Journal and Redbook. On August 22, 1938, they arrived, aboard the S.S Queen Mary, in New York City from Southampton, England.
Mitchell passed away March 30, 1940, in Charleston, South Carolina, according to the New York Times, which published the news on April 2. The article said he was 53 years old, which was incorrect, so most sources have 1887 as his birth year.