As Larry pointed out, it is in the Library of Congress, (LOC) in the McClellan papers. It can also be viewed on line. I believe Chilton later wrote that the policy was for a courrier to breing back a signed envelope to show an order was delivered. He said there was no notice of a missing order, and so assumed all had been delivered.
While there is a record of D.H. Hill losing an order during the Seven Days, there is no evidence that he received both copies of the order, and he vehemently denied that he had. You're referring to McClellan's telegram to Lincoln, where he wrote he "had all the plans of the rebels." Which is in the OR's, along with a typescript of the order.
Thomas G. Clemens D.A.
Professor of History
Hagerstown Community College
>>> "G E Mayers" <gerry1952@...> 08/30/09 9:23 PM >>>
<snip>4. Per Sears, The Lost Order, the envelope in which it was
found, and Gen. Williams note are in the McClellan Papers in the
LOC. N&S, vol. 5, no. 7., p. 64.
But where is the actual copy of SO191 which Mac read and then
jubilantly announces he has in hand "the plans of the Rebels"?
Yr. Obt. Svt.
G E "Gerry" Mayers
To Be A Virginian, either by birth, marriage, adoption, or even
on one's mother's side, is an introduction to any state in the
Union, a passport to any foreign country, and a benediction from
the Almighty God. --Anonymous