[Motorcycle] [Literature] Lincoln, Andrew Carey. Motorcycle Chums (Stormbound and In The Land of the Sky.) Chicago: M.A. Donohue & Company, 1912 and 1914. Hardcover First Editions. About 260 pages each, both measure 5.25" x 7.75". The Motorcycle Hums were a series of young Adult Novels written by bAndrew Carey Lincoln.....