Mr. and Mrs. van der Luyden divided their time between Trevenna, their place in Maryland, and Skuytercliff, the great estate on the Hudson which had been one of the colonial grants of the Dutch government to the famous first Governor, and of which Mr. van der Luyden was still "Patroon."
He felt a distinct disappointment on learning that she was away; and almost immediately remembered that, only the day before, he had refused an invitation to spend the following Sunday with the Reggie Chiverses at their house on the Hudson, a few miles below Skuytercliff.
But she was brought up in the country because her mother had to leave New York after the disgrace, whatever it was: they lived up the Hudson alone, winter and summer, till Mamma was sixteen.
As he paced the platform, waiting for the Washington express, he remembered that there were people who thought there would one day be a tunnel under the Hudson through which the trains of the Pennsylvania railway would run straight into New York.
There are no more uses of "The Hudson" in the book.
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Maybe he decided to drive into the Hudson River.
Laurie Halse Anderson -- The Impossible Knife of Memory
People are saying he flew his aeroplane twenty miles this morning, up the Hudson River.