By Jules Skotnes-Brown From the White Man’s Grave to the White Man’s Home? Experiencing ‘Tropical Africa’ at the 1924–25 British Empire Exhibition By Charlotte Sleigh ‘Not one voice speaking to many’: E C Large, wireless, and science fiction fans in the mid-twentieth century By Elizabeth Bruton The life and material culture of Hertha Marks Ayrton (1854-1923): suffragette, physicist, mathematician and inventor By David Saunders Wired-up in white organdie: framing women’s scientific labour at the Burden Neurological Institute By Becky Peacock Uncovering the secrets of Canadian Pacific By Keith Harcourt and Roy Edwards Engineering and the family in business: Blanche Coules Thornycroft, naval architecture and engineering design By Lynda Nead ‘As snug as a bug in a rug’: post-war housing, homes and coal fires By James Mooney The Hugh Davies Collection: live electronic music and self-built electro-acoustic musical instruments, 1967-1975 By James Mansell ‘A Chamber of Noise Horrors’: sound, technology and the museum By Joanne Gooding Rather unspectacular: design choices in National Health Service glasses