The DUBUQUE COUNTY - KEY CITY GENEALOGICAL SOCIETY has a library of local resources and publishes reference books on local genealogy. Its website inlcudes links to several Dubuqueland archives, libraries, and historical societies.
The website SHARINGS FROM DUBUQUELAND'S PAST includes an annual article with links to pertinent websites to augment the content of the article.
The essay by William Roba (an officer of the Society for German-American Studies and a community college instructor in Bettendorf, Iowa) gives strong reasons and insights for learning about the German heritage of the people of Iowa.