Isaacson presents a collection of primary sources that gives readers direct access to the intellectual and textual history of the Declaration of Independence. The appendices are an important part of his argument, functioning as a collection of documents that trace the development of the Declaration’s ideas and language. The selection progresses from the general to the specific: from the broad European political philosophy of John Locke and Jean-Jacques Rousseau, to the immediate American precedent of the Virginia Declaration of Rights, and finally to the detailed evolution of the text from Jefferson’s draft to the final version. This structure allows Isaacson to demonstrate how the Declaration emerged from earlier philosophical traditions and a collaborative drafting process shaped by political debate and revision. The inclusion of these full texts invites readers to engage in the work of historical analysis themselves, comparing language and ideas to see precisely how the founding principles were assembled.

The appendices provide concrete evidence for The Importance of Collaboration and Revision in the creation of the Declaration. A direct comparison between Jefferson’s “Original Rough Draught” (Appendix 5) and the final text (Appendix 6) makes the impact of the editing process clear. Jefferson’s original phrase, “We hold these truths to be sacred & undeniable” (53), places the claim within religious language and moral certainty. The committee’s revision to “self-evident” shifts the emphasis toward Enlightenment rationalism and the idea that these truths could be understood through reason. Appendix 1 details this collaborative process, noting that the drafting committee worked for ten days before the document even reached the floor of the Continental Congress, where it underwent further “mutilations,” in Jefferson’s view. Franklin’s story of the hatter, recounted in this appendix, illustrates the frustrations and practical realities of collaborative editing. The story also suggests that revision can reshape public language into a clearer and more widely acceptable form. Through these examples, Isaacson presents the Declaration’s final language as the result of negotiation, revision, and collective decision-making.

The excerpts from Locke (Appendix 2) and Rousseau (Appendix 3) establish the philosophical foundations for the Declaration’s claims about rights and government. Both thinkers discuss forms of social contract theory, a political idea that governments derive authority from the agreement of the people they govern. Locke’s argument that people unite “for the mutual preservation of their lives, liberties and estates” (49) provides an important foundation for the Declaration’s assertion that governments are instituted to secure rights like “Life, Liberty and the pursuit of Happiness” (53). Isaacson’s inclusion of Locke’s proviso that private property can only be claimed from nature when “enough, and as good, left in common for others” (49) also connects his political philosophy to later discussions of the commons and shared public resources. Rousseau’s concept of the “general will,” a collective power aimed at the common good, further shows that the revolutionary leaders drew upon political theories that connected individual liberty to collective civic responsibility and consent.

Comparing Jefferson’s draft with the final Declaration highlights America’s Founding Contradiction with stark clarity. Appendix 5 contains Jefferson’s passage condemning King George III for perpetuating the slave trade, calling it a “cruel war against human nature itself” (57). The complete removal of this section from the final text (Appendix 6), which Appendix 1 connects to the need to maintain support from southern slaveholding colonies, provides important textual evidence of the political compromises involved in drafting the Declaration. The revisions show that the language of universal liberty existed alongside decisions that protected slavery and limited the scope of those principles. Furthermore, the Virginia Declaration of Rights (Appendix 4), while advocating inherent rights, also provided language that could be interpreted in ways that excluded enslaved people from those protections. Through these documents, Isaacson shows how debates about liberty, rights, and slavery were present within the founding texts themselves.