Sons of Liberty - Well, those in Boston anyway. There were similar organizations scattered throughout the Thirteen Colonies in the years leading up to the American Revolutionary War, and, yes, "Sons of Liberty" was a common name ;)
13 star revolutionary war flag
Benjamin Franklin's political cartoon calling for colonial unity during the French and Indian War; it would be used again during the American Revolution.
The American Revolutionary War (1775–1783) George Washington, Valley Forge
Broadside Soliciting Recruits, 1775
American minutemen, War of Independence
Turtle (submersible) - The first submarine used in the US Revolutionary War
Revolutionary War Timeline (1775-1783) infographic