For those people still wondering;
The building by A.J. Davis is the residence of Joel Rathbone, nicknamed Kenwood, near The Albany, NYC. It was built in 1841 and allready torn down 26 years later, in 1867. Joel Rathbone owned a large estate in the Albany. The residence was occupied by Rathbone and his family. As far as I've discoverd. 
You can read some more on wikipedia.
https://en.wikipedia.org/wiki/Kenwood,_Albany,_New_York

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And here is the best part; The illustration that started this whole topic can be found in the book "Cottage Residences: Or, a series of designs for rural cottages and cottage villas, and their gardens and grounds. Adapted to North America", written by Andrew Jackson Downing, published in 1956. (GhoulishDelight allready mentioned him in his opening post for this topic!) You can read the complete work online. The chapter on the Joel Rathbone mansion start at page 170. The book doesn't only feature the legendary illustration, but also a floor plan of the ground floor! And an overview of the grounds in which the mansion is situated.
https://archive.org/stream/cottageresidence00down_0/cottageresidence00down_0#page/n205/mode/1up

And a link to the image:
https://ia600708.us.archive.org/BookReader/BookReaderImages.php?zip=/5/items/cottageresidence00down_0/cottageresidence00down_0_jp2.zip&file=cottageresidence00down_0_jp2/cottageresidence00down_0_0208.jp2&scale=1&rotate=0

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BUT even better: A.J. Downing also wrote a book, several years later, which features the mansion again. This time illustrated from another angle. "A treatise on the theory and practice of landscape gardening, adapted to North America" was published in 1859. The illustration can be found on page 346.
https://archive.org/stream/treatiseonth00down#page/n377/mode/1up

And a link to the image:
https://ia800407.us.archive.org/BookReader/BookReaderImages.php?zip=/17/items/treatiseonth00down/treatiseonth00down_jp2.zip&file=treatiseonth00down_jp2/treatiseonth00down_0382.jp2&scale=0.5&rotate=0

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Last Edited By: Snipperdepipper Oct 2 16 10:36 PM. Edited 2 times.