The Bonhams auction house has a number of Queen items for sale, among them a 3:30 clip of "an 8mm colour film of their concert in Hyde Park," and handwritten lyrics to WWRY (from 2010):
http://www.bonhams.com/cgi-bin/public.sh/WService=wslive_pub/pubweb/publicSite.r?sContinent=eur&screen=catalogue&iSaleNo=19036&iSaleLotNo=249
Daniel Nester