Photograph - Hecla Electrics Pty Ltd Shield; circa 1940; Black and white photograph of Hecla advertising material featuring a shield depicting a volcano. The heat from its lava was meant to signify the heat flowing from Hecla electric radiators. The Hecla volcano trademark originated in 1916; when Mount Hecla in Iceland erupted making world news. This photograph is from an album containing 255 black and white photographs depicting electrical