Authors are organized into "Groups" and titles are organized into "Collections," both of which can be found in The Library/Groups & Collections. The aim is to show the interconnections and relationships which exist between authors, the books they wrote, and the ideas they advocated.

Collections  of titles include:

• topics- Natural Law and Natural Rights
  
• syllabi - Classics in the History of Political Thought
  
• subject areas - Political Theory
  
• debates - The Divine Right of Kings vs. Individual Rights
  
• special collections - Liberty Fund's publication of the Natural Law and Enlightenment Classics series

On every title table of contents page is listed the Collections to which that author belongs, e.g. Locke's Two Treatises of Civil Government were part of the following collections:

• subject areas - Political Theory
  
• syllabi - Classics in the History of Political Thought
  
• special collection - classics of liberty
• special collection - editor's suggestions
• debates - The Divine Right of Kings vs. Individual Rights
  
• topics- Natural Law and Natural Rights
  
• topics- Natural Law and Natural Rights
  
• topic - property
  

A title's membership of a collection makes it possible to explore the many interconnections which exist between that book and others which were written at the same time and the influence they have had on later generations of writers and thinkers.