Author
Schelbert, Leo
4
Swiss-American Historical Society
3
Bosshard-Kälin, Susann, 1954-
2
Jones, Richard S.
2
Meier, Sigbert
2
PTT Museum (Bern, Switzerland)
2
Perret, Maurice E.
2
Basler, Konrad, 1929-
1
Burgert, Annette K.
1
Eshleman, H. Frank 1869-1953,
1
Grueningen, John Paul von
1
Koger, M. V.
1
Library of Congress Congressional Research Service
1
Library of Congress. Congressional Research Service
1
Magee, Joan
1
Pantle, Alberta
1
Pritzker-Ehrlich, Marthi, 1944-1998
1
Schrader-Muggenthaler, Cornelia
1