The Mill Valley Historical Society First Wednesday Virtual Event will host “Ghost Ships of the San Francisco Bay,” presented by Pat Broderick. This virtual event will be held Oct. 5 at 7 p.m. Few of us are aware of these relics from San Francisco’s maritime past, many forgotten for a century or more.  Yet, every day Bay Area residents travel over long-buried ships. The discussion will highlight some of the steam schooners, Gold Rush ships, Golden Gate wrecks and U.S. Navy ships that forever remain “ghosts” in our waters. The event is free, but registration is required at millvalleylibrary.libcal.com. For more information, call 415-389-4292 or visit millvalleylibrary.org