The Yearbook of German-American Studies is published annually. The editor welcomes contributions in English, preferably, or German, on the history, language, literature, and culture of the German element in the Americas. This includes coverage of the immigrants and their descendants from Germany, Austria, Switzerland, and other German-speaking areas of Europe.
The maps on this site show U.S. Census data about the number of people with German Ancestry1 and the number of speakers of German2. Both maps are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
1 Kilpinen, Jon T., 2014. "German Ancestry, 2012." United States Map Gallery. Map 06.06. http://scholar.valpo.edu/usmaps/54
2 Kilpinen, Jon T., 2014. "German Speakers, 2012." United States Map Gallery. Map 11.07. http://scholar.valpo.edu/usmaps/86