The classical foundations of the American Constitution: prevailing wisdom By David J. Bederman
http://books.google.com/books?id=fm8...page&q&f=false
Likely at a library...somewhere.
Also...
The early security confederations : from the ancient Greeks to the United Colonies of New England (Frederick K. Lister).
The later security confederations : the American, "new" Swiss, and German unions (Frederick K. Lister)
and...
HISTORY AND ANALYSIS OF THE CONSTITUTION OF THE UNITED STATES WITH A FULL ACCOUNT OF THE CONFEDERATIONS WHICH PRECEDED IT OF THE DEBATES AND ACTS OF THE CONVENTION WHICH FORMED IT; OF THE JUDICIAL DECISIONS WHICH HAVE CONSTRUED IT; WITH PAPERS AND TABLES ILLUSTRATIVE OF THE ACTION OF THE GOVERNMENT AND THE PEOPLE UNDER IT.
BY NATHANIEL C. TOWLE,
COUNSELLOR AT LAW, WASHINGTON, D.C.
link 1 (1860)
link 2 (1871)