Ludwig Wittgenstein: Ein biographisches Album edited by Michael Nedo C.H. Beck, 2012, 463 pages, €39.99   In the train of the acclaimed exhibition “Wittgenstein and Photography”, shown at the London School of Economics to much acclaim in the summer of 2012, Michael Nedo, director of the Wittgenstein Archive in Cambridge and editor of the Wiener Ausgabe of Wittgenstein’s writings, has produced a sumptuously illustrated biography of the philosopher under the imprint of the Munich publisher C.H. Beck. Like his earlier co-edited volume Ludwig Wittgenstein: Sein Leben in Bildern und Texten (1983), it combines the visual and the textual in a…