In 1815, John Adams wrote to a correspondent of the importance, of all things, of the Boston Committee of Correspondence in the 1760s:
…I never belonged to any of these Committees and have never Seen one of their Letters Sent or received... But in my Opinion the History of the United States never can be written, till they are discovered. What an Engine! France imitated it, and produced a Revolution. England and Scotland was upon the Point of imitating it, in order to produce another Revolution and all Europe was inclined to imitate it for the Same Revolutionary Purposes.

The History of the World for the last thirty Years is a Sufficient Commentary upon it. That History ought to convince all Mankind that Committees of Secret Correspondence are dangerous Machines. That they are Causticks and Inscision Knives, to which Recourse Should never be had but in the last Extremities of Life; in the last question between Life and Death.
My guest Micah Alpaugh believes that John Adams was, despite his typical gift for epistolary hyperbole, absolutely and interestingly correct. And Alpaugh makes that argument in his new book Friends of Freedom: The Rise of Social Movements in the Age of Atlantic Revolutions. Micah Alpaugh is Associate Professor of History at the University of Central Missouri; this is his second book.

For Further Investigation

The English cartoonist James Gillray, who has claim to be the first great political cartoonist, made the London Corresponding Society a frequent target of his artistic abuse. The "London Corresponding Society, Alarm'd" imagined the members of the corresponding societies as feral subhumans, alarmed at the charges made against Tom Paine for the second part of his Rights of Man. On the other hand "Copenhagen House" was an almost sympathetic depiction of a mass-meeting of corresponding societies–with plenty of dissenters and abolitionists among them.
A related conversation, covering the curious connections between revolutions in Europe and the Americas, was in Episode 176: Men on Horseback, or, What Charisma Has to Do With It.
And for a deep dive into the French Revolution, see the conversation with Jeremy Popkin  in Episode 144: The French Revolution; and Episode 234: The Fall of Robespierre