From Ancestry.com: On June 5, 1917, Mark Jackson Dover, age 26, completed his WWI draft registration form. He was born February 27, 1891 in Hatfield, AR. He was President and Manager of the Dover Music Company. He was married but did not list his wife's name. He signed his name Mark Jackson Dover. He was medium height, medium build, gray eyes and brown hair. Marjorie Dover Stansel