In writing my book about postwar museums, I have included a section on the design of the Neue Staatsgalerie in Stuttgart, which is important for its postmodernism, but also that it led to Jim Stirling being considered for every other major museum project during the 1980s, including coming second in the Getty competition and submitting a fascinating drawing which I have been unable to reproduce for the Sainsbury Wing (it’s inaccessible in the CCA because of Coronavirus). I wish I had had access to the attached very detailed and poignant description of the gestation of the Staatsgalerie’s design by John Tuomey, which gives a brilliantly detailed account of the gestation of the Staatsgalerie and of Stirling’s working method more generally, in the days when everything was done through drawing:-

https://www.drawingmatter.org/sets/drawing-week/stirling-stuttgart-rear-view-views/