Author
Schelbert, Leo
6
Swiss-American Historical Society
3
Bonnaud-Delamare, Roger
2
Bosshard-Kälin, Susann, 1954-
2
Burgert, Annette K.
2
Jones, Richard S.
2
Meier, Sigbert
2
PTT Museum (Bern, Switzerland)
2
Perret, Maurice E.
2
Pfister, Hans Ulrich
2
Basler, Konrad, 1929-
1
Boldt, Andrea
1
Collin, Bernadine T.
1
Enninger, Werner
1
Eshleman, H. Frank 1869-1953,
1
Gratz, Delbert L., 1920-
1
Grueningen, John Paul von
1
Hinke, William John, 1871-1947
1
Library of Congress Congressional Research Service
1
Library of Congress. Congressional Research Service
1
Pritzker-Ehrlich, Marthi, 1944-1998
1
Schrader-Muggenthaler, Cornelia
1
Smith, Carl Thurman
1
Spangenberger, Otto
1
Stoudt, John Baer
1