By Katrina Dean and Susan Gordon Collaboration and mediation: a guide to the creation of the Stephen Hawking Archive By Juan-Andres Leon Stephen Hawking’s superspace and supergravity blackboard: an iconic artefact in the making By Tilly Blyth and Alison Boyle Theory and every thing: acquiring the office of Professor Stephen Hawking as a resource for history and museology By Tilly Blyth Issue 21 Editorial By Manon Parry The valuable role of risky histories: exhibiting disability, race and reproduction in medical museums By Sarah Bond, Katie Dabin, Stewart Emmens, Selina Hurley and Natasha McEnroe Curating Medicine: The Wellcome Galleries By Stewart Emmens Wounded – an exhibition out of time By Sophie Goggins, Tacye Phillipson and Samuel J M M Alberti Prosthetic limbs on display: from maker to user By Joanne Gooding Rather unspectacular: design choices in National Health Service glasses By Mieneke te Hennepe Private portraits or suffering on stage: curating clinical photographic collections in the museum context