The ships and crews of the U.S. Lighthouse Tender Service were the unsung heroes of Great Lakes transportation for more than a century. Yet despite the critical role they played in maritime operations, little information is available about these hard-working men and the ships they called home. Author Paul J. Mason provides an illustrated history of lighthouse tenders that served on "The Lakes," complete with rare photos and fascinating back stories. Great Lakes history buffs will enjoy learning about these forgotten ships and crews, and their place in maritime's golden age.