[rxsid]

Seriously, not his "book", but what he write about. As in, the contents. It's possible, as they used what he wrote about (the contents) to help them raise a nation.

In correspondence with the publisher of the English edition of Vattel, Benjamin Franklin reported, "[The text] has been continually in the hands of the members of our Congress now sitting, who . . . have entertained a high and just esteem for [its] author."196 Modern scholars have noted further that Vattel significantly influenced the Constitution.197 It is in this light that we should regard Article I, which grants Congress the power to "define and punish . . . Offences against the Law of Nations,"198 and Article VI, which declares that "Treaties . . . shall be the supreme Law of the Land."199

http://www.law.duke.edu/shell/cite.pl?49+Duke+L.+J.+1077

You say that "of" is a preposition. So, is a preposition a noun? If not, how can a noun contain a preposition? If it can not, then "Law of Nations" is not merely some "noun" that you speak of.

[rxsid]

wrote about.