Basil of Baker Street is a series of children's novels written by Eve Titus and illustrated by Paul Galdone. The stories focus on the titular Basil of Baker Street and his personal biographer Doctor David Q. Dawson. Together they solve the many crimes and cases of the mouse world. Both live in Holmestead, a mouse community built in the cellar of 221B Baker Street, where Sherlock Holmes is a tenant upstairs. The 1986 Disney animated feature The Great Mouse Detective was based on these novels.