Onto the reading list
Social Philosophy and Policy special issue on freedom of association, including:
THE PRIVATE SOCIETY AND THE LIBERAL PUBLIC GOOD IN JOHN LOCKE'S THOUGHT
Eric R. Claeys
Social Philosophy and Policy, Volume 25, Issue 02, July 2008, pp 201-234
THE MADISONIAN PARADOX OF FREEDOM OF ASSOCIATION
Richard Boyd
Social Philosophy and Policy, Volume 25, Issue 02, July 2008, pp 235-262
FROM THE SOCIAL CONTRACT TO THE ART OF ASSOCIATION: A TOCQUEVILLIAN PERSPECTIVE
Aurelian Craiutu
Social Philosophy and Policy, Volume 25, Issue 02, July 2008, pp 263-287
and a good deal else besides...