The web address they gave us - http://www.lightvesselhistoricalsociety.org/ - doesn’t exist. But it should do - so I took the liberty! You’ll find a short Figure Ground history of LV21 here! (Some of it may even be true!)
NB: I've since been in contact with Fiona Long, one of the contributing artists on the Lightvessel Historical Society project, alongside Steve McPherson, Sarah Britten-Jones and Katy Beinart. Please do pop over to her blog about the event and keep an eye on it, since more about the history of LV21 may well appear in the future!