The following biographical information was compiled by Margery Vinton as part of her
genealogical research on the Holcomb family. She is Dal Holcomb's grand-niece.

Delorma Bostwick Holcomb (Dal Holcomb) was born in Youngstown, Ohio, on February 27, 1901. Dal Holcomb was best known for his magazine cover and advertising art in the 1930s and 1940s. The painting mediums he chose were watercolor and gouache.

His distinctive magazine covers were drawn with a sense of humor. The women were recognizable by their hourglass-shaped figures, rouged cheeks, victory roll or pin curl hairstyles and often-gloved hands.

He was a prolific illustrator creating covers for King Feature Syndicates, including Saturday Home Review and Tab. His illustrations also appeared on, and in, other magazines including; Pictorial Review, Collier's, College Humor, Liberty, and the American Weekly.

His advertising art illustrations were used by companies that included Old Gold cigarettes, General Tire, Etiquet deodorant, Lux dish soap and Continental Can Company.

In 1942 a patriotic poster of his was published as part of the espionage/patriotism World War II campaign. "Quiet! Loose Talk Can Cost Lives" is included with other war posters of that era in the Kittleson Collection of the Minneapolis Public Library. A copy is preserved in the National Archives at College Park, Maryland.

He was one of two illustrators in We Read about Lightning and Thunder, a juvenile book. (It was written by Harold E. Tannenbaum and Nathan Stillman, 1960.)

He died on January 1, 1978 in Chicago, Illinois.