The library at the Mittag Leffler Institute.

The old photo comes from a scan of the photographic archive available at the Institute, kindly lent to me by the staff. At the table, Gösta Mittag-Leffler and Signe Lindfors.

The more recent one was taken by me on November 21, 2016, during a visit to the Institute, for the research program on interactions between PDE and functional inequalities. It features Markus Schmidtchen and Luigia Ripani.