The Fourth of July is the day we honor America's independence, but on successive fourths from 1776 onward, there have been some fascinating moments in US History. Thomas K. Clancy offers some of these in his new book, "Life, Liberty and the Pursuit of Happiness."

Clancy discusses with host and Sunbury Press founder Lawrence Knorr how the Declaration of Independence and the concept of liberty have changed and expanded beyond what the Founding Fathers could have imagined.

Efforts by Abraham Lincoln, Frederick Douglass, Susan B. Anthony, and Filipinos to make the declaration more inclusive. The deaths of former Presidents John Adams and Thomas Jefferson fell within hours of one another on July 4th, 1826, and Clancy details their long correspondence. The likes of Henry David Thoreau, Theodore Roosevelt, and Lou Gehrig, and the difference in their pursuits are also chronicled.

A nationally recognized expert on the Fourth Amendment, Thomas K. Clancy has written more than 20 articles on the subject, and is the author of "Cyber Crime and Digital Evidence" and "The Fourth Amendment: Its History and Interpretation. He holds the title of Professor Emeritus from the University of Mississippi School of Law, from which he retired in 2014. He lives on Cape Cod.