The Lost Order

[Steve]

Does anyone know when Lee's "lost order" that gave McClellan the edge at Antietam become public knowledge? Trying to determine if it was during the 1864 presidential campaign. - Thanks

The New York Herald reported on the lost orders on September 15, 1862, a couple of days before the Battle of Antietam.

http://chroniclingamerica.loc.gov/lccn/s...d-1/seq-1/
(last column, 2nd story under reports from Washington)

The report is dated September 14th, so it's possible that it could have been in another newspaper a day earlier.