August 25, 1969
Monticello, NY US
Setlists during this period include: Train Kept a Rollin', I Can't Quit You Baby, Dazed and Confused, White Summer / Black Mountainside, What Is And What Should Never Be, You Shook Me, How Many More Times.
Various advertisements for Led Zeppelin's booking here have been uncovered in the archives, though it's still not 100% certain whether this event occurred.
The ads state two shows: 9pm and 11:30pm.
"Exclusive Area Appearance, Plus Heavy Light Works Light Show. Presented by Triple C Promotions"