Scope and Contents From the Series: The series of historical illustrations, titled "Do You Know," produced by Collins to accompany Willis Atwell’s historical facts, were used in a publication to celebrate the State of Michigan's centennial (1935-1937). Collins illustrations contain the publication month & day, and an illustration number. The published book form, called "Do You Know", contains the same date & illustration number, and can be used as an index to the original illustrations. In addition to the book form,...