William Ladd (Ladd, William)

• 
  Dissertation on the Subject of a Congress of Nations, for the Adjustment of International Disputes Without Recourse to Arms
  by William Ladd
  Hardcover, Fred B Rothman & Co, ISBN 0837724155 (0-8377-2415-5)
• 
  An Essay on a Congress of Nations for the Adjustment of International Disputes Without Resort to Arms
  by William Ladd, Mark W. Janis, James Brown Scott
  Hardcover, Lawbook Exchange Ltd, ISBN 1584777451 (1-58477-745-1)
• 
  The Essays of Philanthropos on Peace and War
  by William Ladd
  Hardcover, Garland Pub, ISBN 0824002210 (0-8240-0221-0)