Engineers of Map Art, a book on the history of Swiss cartography that focuses on work done at ETH Zurich, came out in English last September. (The German edition, Ingenieure der Kartenkunst, came out last January.) “This publication provides a comprehensive overview of 170 years of cartography at ETH Zurich and pays tribute to the personalities who have contributed to the development of the discipline. It is published on the occasion of the 100th anniversary of the Institute of Cartography and Geoinformation and highlights its contribution to science and practice.” Eduard Imhof is covered in chapter 4. It’s available for free download as an open-access PDF; a hard copy can be ordered for CHF 50. Thanks to Peter Wrobel for the tip.