Note: Australia is generally considered to be a continental landmass, rather than an island. If however one does count Australia among the islands it, not Greenland, would be the largest in the world (unless one also considered Antarctica an island).
... Merry Pranksters[?], with the early sound heavily influenced by Kesey's LSD-soaked Trips Festivals[?]. This early period is covered in Tom Wolfe's "The Electric Kool-Aid ...