Statistics for occurrence #1 of “Hamburg” in chapter 1 of George Bancroft, History of the United States from the Discovery of the American Continent, Vol. 5, 13th edition.:

...was composed of the emperor himself, of about one hundred independent prelates and princes, and of delegates from nine and forty independent towns. These last, besides the free cities of Bremen and Hamburg , had internally not only municipal liberties, but self-government, and were so many little republics, dotted throughout the land, from the Rhine to the Danube. But in the Diet, their votes counted ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Hamburg (Hamburg, Germany) 50 2 2 0 0 user votes
Hamburg (Pennsylvania, United States) 80 0 2 0 0 user votes
Hamburg (Missouri, United States) 11 0 1 0 0 user votes
Hamburg (Iowa, United States) 4 0 0 0 0 user votes
Hamburg (Louisiana, United States) 1 0 1 0 0 user votes
Hamburg (Virginia, United States) 1 0 1 0 0 user votes
Hamburg (Alabama, United States) 0 0 0 0 0 user votes
Hamburg (California, United States) 0 0 0 0 0 user votes
Hamburg (Connecticut, United States) 0 0 0 0 0 user votes
Hamburg (Florida, United States) 0 0 0 0 0 user votes
Hamburg (Hamburg, Germany) 0 0 0 0 0 user votes
Hamburg (Illinois, United States) 0 0 0 0 0 user votes
Hamburg (Illinois, United States) 0 0 0 0 0 user votes
Hamburg (Indiana, United States) 0 0 0 0 0 user votes
Hamburg (Indiana, United States) 0 0 0 0 0 user votes
Hamburg (Kansas, United States) 0 0 0 0 0 user votes
Hamburg (Michigan, United States) 0 0 0 0 0 user votes
Hamburg (Minnesota, United States) 0 0 0 0 0 user votes
Hamburg (Mississippi, United States) 0 0 0 0 0 user votes
Hamburg (New York, United States) 0 0 0 0 0 user votes
Hamburg (Ohio, United States) 0 0 0 0 0 user votes
Hamburg (Virginia, United States) 0 0 0 0 0 user votes
Hamburg (Wisconsin, United States) 0 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.