One of the narratives in the article:
"About the 1st of September, Thompson's force of secret workers in the Southern cause had been joined by Colonel Robert M. Martin*, who had been a brigade commander in Morgan's cavalry, and myself [Captain John W. Headley], who had served on Martin's staff. We had been detached for this service by the Secretary of War. We expected to take an active part in an attempt by the Sons of Liberty to inaugurate a revolution in New York City, to be made on the day of the presidential election, November 8th."
*Colonel Martin and I were both descendants of William Roark; a glimpse of Robert Maxwell Martin's post-war life here