The William Boyes Wooden Monorail

I saw this picture yesterday at Seattle’s MOHAI (Museum of History and Industry).  The caption said that the monorail was constructed in 1911 of wood and ran through the “tidal flats” of Seattle.  Not much is known of it, though Lyle Zapato dredges up a bit in “Carpetbagging Monorailists: A Cascadian Tradition.”