Walter S. Rogers was the primary illustrator used by the Stratemeyer Syndicate

Stratemeyer Syndicate

The Stratemeyer Syndicate was the producer of a number of mystery series for children, including Nancy Drew, the Hardy Boys, the various Tom Swift series, the Bobbsey Twins, the Rover Boys, and others.- History :...

 for most of its series from the 1910s-1930s. Rogers was replaced in the 1930s by several other illustrators (Marie Schubert and Gretta for example) whose work was more modern and "edgy".

Rogers contributed illustrations in part or full for The Bobbsey Twins, Hardy Boys (Vol. 1-10), Tom Swift

Tom Swift

Tom Swift is the name of the central character in five series of books, first appearing in 1910, totaling over 100 volumes, of American juvenile science fiction and adventure novels that emphasize science, invention and technology. The character was created by Edward Stratemeyer, the founder of...

, Bunny Brown and His Sister Sue, Six Little Bunkers, Ted Scott Flying Stories

Ted Scott Flying Stories

The Ted Scott Flying Stories was a series of juvenile aviation adventures created by the Stratemeyer Syndicate using the pseudonym of Franklin W. Dixon and published almost exclusively by Grosset & Dunlap...

, Motion Picture Chums, Motion Picture Boys, Motion Picture Girls, Outdoor Girls, X Bar X Boys

X Bar X Boys

The X Bar X Boys was a series of western adventures for boys created by the Stratemeyer Syndicate and written under the pseudonym of James Cody Ferris and published by Grosset & Dunlap. At first, a total of 2 or 3 volumes were published per year,...

, and others.