www.hippielight.com: The History of the "lava lamp" | The Hippiest Light of the "lava lamp". Informative Website Regarding Vintage 1960s & 1970s "lava Lamps", Grape Lamps and Johnson Industries Rain Lamps
Scene in Action Serenader Motion Lamp, circa 1931 at 1stDibs | scene in action motion lamp, motion lamp vintage