Author
- McGuinness, Brian
- Wittgenstein, Ludwig, 1889-1951 4 results
- Frege, Gottlob, 1848-1925 2 results
- Wright, G. H. von (Georg Henrik), 1916- 2 results
- Frongia, Guido 1 results
- Gabriel, Gottfried, 1943- 1 results
- Kaal, Hans 1 results
- Kenny, Anthony, 1931- 1 results
- Keynes, John Maynard, 1883-1946 1 results
- Moore, G. E. (George Edward), 1873-1958 1 results
- Russell, Bertrand, 1872-1970 1 results
- Schlick, Moritz, 1882-1936 1 results
- Waismann, Friedrich, 1897-1959 1 results
- Wittgenstein, Ludwig, 1889-1951. Cambridge letters 1 results