Statistics for occurrence #1 of “Hudson river” in chapter 1 of Medford Historical Society Papers, Volume 7.:

... this made requisite by the locks, while the rafts of logs bound for the ship-yards of Medford, were towed in bands and passed the locks singly. Steam navigation had become an assured fact on the Hudson river in 1807, one year before Mr. Sullivan took charge of the canal, but years before the canal went into operation a steamboat was successfully operated upon the Connecticut river, and its owner and inve...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Hudson River (United States) 290 0 0 0 0 user votes
Hudson River (Maryland, United States) 106 0 0 0 0 user votes
Hudson River (Florida, United States) 20 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.