This is inferred to be the location of the "old circus grounds" in Palmyra where freethought lecturer C. B. Reynolds pitched his tent and delivered a freethought oration on June 25, 1886. This was one stop on the tent lecture tour that gave rise to his famous blasphemy prosecution in Boonton, New Jersey, in which he was defended by Robert Green Ingersoll.
The location appears to be just inside the oval racetrack of the current-day Wayne County Fairgrounds. If you have more accurate information as to the location of the old circus grounds, please contact us at firstname.lastname@example.org.
June 25, 1886