By Rebekah Higgitt Revealing observatory networks through object stories: Introduction By Rebekah Higgitt, Susana Biro and Pedro M P Raposo Revealing observatory networks through object stories: Observatory audiences By Ileana Chinnici, Louise E Devoy and Fernando B Figueiredo Revealing observatory networks through object stories: Object itineraries By Emily Akkermans, Kelley Wilder and Samantha Thompson Revealing observatory networks through object stories: Instrumental networks By Nicola Froggatt When is a shield not a shield? Interpreting Indigenous versatility in an East End match factory By Doug Millard Black Arrow R4: the object behind the screen By Elizabeth Bruton, Jeremy McCarthy and Dermot Turing Zygalski sheets: Polish codebreaking and the role of reconstruction in the Top Secret exhibition at the Science Museum By Farrah Lawrence-Mackey ‘Iron lung’ as metaphor By David Bryden Science and the City: Valentine Gottlieb, immigrant engineer of Lambeth: his trade card of c. 1810 unpacked By Daniel Belteki A model instrument: the making and the unmaking of a model of the Airy Transit Circle
