List of Amtsblätter that are digitized: Wikisource. Lists of foreigners expelled from Germany. See Database of names database on Compgen.de.
List of newspaper for alll countries on Wikipedia:List of online newspapers: https://en.wikipedia.org/wiki/Wikipedia:List_of_online_newspaper_archives
DDB newspapers online: https://www.deutsche-digitale-bibliothek.de/newspaper/select/place?filter=L&filterQuery=
English instructions for using the German Digital newspapers: https://www.deutsche-digitale-bibliothek.de/content/newspaper/hilfe
Use and * in the search bar to see a list of all newspapers online.
List of German newspapers on BYU site: https://eudocs.lib.byu.edu/index.php/Historic_German_Newspapers_and_Journals_Online
Book by Ernest Thode gives many newspaper sources for Germany.
German-Language Newspaper Access in North America
See extensive list of newspaper type publications for Bavaria at Bavaria Family History listed under "Sources"
German-American newspapers online: http://chroniclingamerica.loc.gov/newspapers/?state=ðnicity=German&language=
International Zeitung Museum: http://izm.de/museum/sammlung/
Digitized newspapers at the University of Bonn: http://digitale-sammlungen.ulb.uni-bonn.de/ulbbnz/nav/index/all?s=title [This collection includes over 193 titles; entries can be sorted alphabetically by title, place, author, or by date].
Additional newspapers titles can be found in the individual web pages for Germany, such as Bavaria Family History.
Preussisches Zentral Polizei-Blatt: Search in this partially indexed records here: http://wiki-de.genealogy.net/Preussisches_Zentral-Polizei-Blatt
Eberhardt's allgemeiner Polizei Anzeiger Vol. 44 1857:Polizei Anzeiger 1857. Search for 'nach Amerika" to find possible emigrants.
Eberhardt's allgeminer Polizei Anzeiger 1865
Eberhardt's allgemeiner Polizei Anzeiger 1867: 1867 Other volumes are available for 1853, 1854, 1855, 1856, 1857, 1858, 1859, 1860, 1861, 1862, 1864, 1865, 1866
See "Tales from the German Underworld: Crime and Punishment in the Nineteenth Century"