I revisited the exhibition at the Architectural Association which demonstrates the changing form of the Warburg Institute, originally housed in luxury in a suburb of Hamburg, next door to Warburg’s house (the exhibition closes March 7):-

Then briefly in Thames House on Millbank in a layout designed by Godfrey Samuel of Tecton:-

Then, from 1937 to 1958, in the Imperial Institute:-

Finally, in Woburn Square:-

It tells one a lot about the relationship between a library, the nature of reading, and the history of ideas.