Levine, Bruce; Kamphoefner, Walter D.; Helbich, Wolfgang; Sommer, Ulrike; Vogel, Susan Carter (September 1992). "News from the Land of Freedom: German Immigrants Write Home". The Journal of American History. 79 (2): 654. doi:10.2307/2080093. ISSN0021-8723. JSTOR2080093.
Levine, Bruce; Kamphoefner, Walter D.; Helbich, Wolfgang; Sommer, Ulrike; Vogel, Susan Carter (September 1992). "News from the Land of Freedom: German Immigrants Write Home". The Journal of American History. 79 (2): 654. doi:10.2307/2080093. ISSN0021-8723. JSTOR2080093.
worldcat.org
Levine, Bruce; Kamphoefner, Walter D.; Helbich, Wolfgang; Sommer, Ulrike; Vogel, Susan Carter (September 1992). "News from the Land of Freedom: German Immigrants Write Home". The Journal of American History. 79 (2): 654. doi:10.2307/2080093. ISSN0021-8723. JSTOR2080093.