The Promise of Liberty
When the Signers of the Declaration of Independence declared that “all men are created equal,” they knew those words described an ideal, not a reality. Even the most forward-thinking Founders were shaped by the limits and prejudices of their time. Yet they risked everything for a revolutionary idea: that government exists to serve its people, not rule over them—and that liberty belongs to all.
The Promise of Liberty invites visitors of all ages to explore that daring experiment and its lasting impact. This powerful exhibition looks honestly at America’s aspirations, achievements, contradictions, and unfinished work, inspiring today’s citizens—and tomorrow’s—to imagine a stronger democracy and a more inclusive society.
At the heart of the exhibition is a simple but enduring idea: E Pluribus Unum—Out of Many, One. America’s strength has always come from its people. From every background, ability, belief, identity, and walk of life, generations have shaped the nation’s evolving promise of freedom and equality. Here, that story is told as a living, shared inheritance.
Through a remarkable collection of authentic historic documents, The Promise of Liberty reintroduces the Declaration of Independence, the Constitution, and other cornerstones of freedom not just as artifacts of the past, but as tools for the present. Democracy is presented as a form of technology—a system designed to solve problems, balance competing interests, and adapt over time. Imperfect and challenging, yes—but still humanity’s most powerful framework for self-government.
The exhibition features some of the most significant documents and objects in U.S. history, including:
- A 1776 edition of the Declaration of Independence
- The first printing of the United States Constitution
- Gilbert Stuart’s portrait of George Washington
- George Washington’s famed “To Bigotry No Sanction” letter, articulating a radical vision of religious freedom
- A Constitutional Convention cover letter emphasizing the necessity of compromise
- A presidential Thanksgiving Proclamation championing education and science
- A copy of Martin Luther King Jr.’s I Have a Dream speech, expanding on the founding documents as a “promissory note” for all Americans
- The Mitchell Map, used during the Treaty of Paris to define the boundaries of the newly independent United States
- A rare life mask of George Washington, one of only two known casts taken directly from life in 1785 Meriwether Lewis’s 1814 tomahawk, carried during the expedition that reshaped the nation’s future.
The Promise of Liberty is not just an exhibition about history. It’s an invitation—to reflect, to discuss, and to participate. Come discover how words written centuries ago continue to shape our lives today, and how each of us plays a role in fulfilling the promise they set in motion.
Experience the exhibition. Engage the ideas. Help shape what comes next.
America 250 Donors
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Thanks to Our Supporters
On July 4, 2026, our nation will commemorate and celebrate the 250th anniversary of the signing of the Declaration of Independence. The journey toward this historic milestone is an opportunity to pause and reflect on our nation’s past, honor the contributions of all Americans, and look ahead toward the future we want to create for the next generation. The Peoria Riverfront Museum will be putting on a series of exhibitions to celebrate 250 years of America art, science, history, and achievement. This would not be possible without the support of our members, donors, and sponsors.