The Boston House Museum Alliance announces its spring 2014 tour series, Servant Life in Downtown Boston.  For these special tours on Saturday, May 17 (12, 1, and 3:30 pm), Otis House, Gibson House Museum, and Nichols House Museum draw on their rich collections and stories to illuminate the history of domestic service over three centuries.  The Otis House tour focuses on the countless hours it took servants to prepare for an elegant entertainment and attend to the day-to-day operations of a large household.  The tour includes a visit to the third floor, a space not currently open to the public.  Tickets ($5 per person) are sold separately at each site.  Presented by Historic New England, The Gibson House Museum, and The Nichols House Museum.  For more information contact Melinda Huff at otishouse@historicnewengland.org or call 617-994-5920.