History lovers from across Long Island headed to Setauket on Saturday for the Three Village Historical Society’s popular Culper Spy Ring Festival.

Now in its fourth year, the event showcases America’s first spy ring, which was used on Long Island to help General George Washington win the American Revolution.

There were volunteers in period garb, demonstrations on 18th century invisible ink that was used in the handwritten transmissions, historic house tours and more.

This year also featured an auction of items used to film Turn: Washington’s Spies on AMC, which focused on the Culper Ring, which had originated in Setauket.

The show was based on historian Alexander Rose’s 2007 book, Washington’s Spies: The story of America’s First Spy Ring.

The various attractions were set up at the Setauket Village Green and the Three Village Historical Society headquarters at 93 North Country Road.

Scroll down for photos and descriptions.

Flags lined the historical society’s entrance at North Country Road on Saturday.

Volunteers in period garb were on hand for demonstrations and to answer questions.

Making chicken soup as they would have in Colonial times.

More volunteers in period garb at the North Country Road property.

Attendees were also invited to tour the neighboring Thompson House, which was built in 1700.

There were various demonstrations throughout the historical society property.

And people were invited to tour the historical society headquarters, a farmhouse built in 1800.

Demonstrations and period actors were also on hand inside the Thompson House.

A popular demonstration showed visitors how Dr. Thompson would have made his pharmaceuticals.

There were also activities at the Village Green to the east.