Scope and Contents From the Series: This series comprises the original printing plates for 32 of the original 56 photographic illustrations in A. Roy Knabenshue, Compliments of Roy Knabenshue (Toledo, OH: Hadley Printing & Paper Co., [1907]), which documents the author's activities in ballooning and in the development of the dirigible in the period between 1903 and mid-1907. One additional plate is a larger version of a published image. The last plate is too damaged to identify; however,...