A resource from CONSTITUTION.ORG
The Law of Nations, by Swiss philosopher Emer de Vattel,
is a book that influenced many of the Founding Fathers of the united States of America.
Centuries after his death, it was found that United States President George Washington had a number of overdue library books dating back over 221 years.
One of them was The Law of Nations.
Benjamin Franklin said that this book by Vattel, "has been continually in the hands of the members of our Congress now sitting."
There are some inconsistencies in this document,
from source to source, so verify any info you use.
Best PDF document I have found. Click Here. (1.9MB - 1758)
Another PDF document for further cross-reference. Click Here. (31MB)
Another PDF document for further cross-reference. Click Here. (13MB - Georg Friedrich Martens - 1829)