Leaflet - Hecla Electrics Pty Ltd; Mock-up for 'Electric Fires' Advertisement Featuring Lounge Room Scene & Hecla Volcano Logo; circa 1920s; Pen and ink mock-up of advertisement for Hecla Electrics Pty Ltd electric heater; with the Hecla volcano logo in the bottom left hand corner circa 1920s. The heat from its lava was meant to signify the heat flowing from Hecla electric radiators.The Hecla volcano trademark originated when in 1916 Mount Hecla in Iceland erupted making world news. This photograph is from an album containing 255