Mystery solved, the answer was so boring Indiana Jones: Mystery of University of Chicago package solvedhttp://herocomplex.latimes.com/2012/12/18/indiana-jones-mystery-of-university-of-chicago-package-solved/
In the end, it wasn’t a prank or a promotional stunt on the part of Lucasfilm or even a bizarre trans-dimensional crack in the line between reality and fiction.
It was a simple accident.
The package, which contained an apparently handmade re-creation of Abner Ravenwood’s diary, originated with a man named Paul, an Indiana Jones prop replicator in Guam, according to the university’s admissions office Tumblr page.
Paul had recently sold the item on Ebay for $200 to a buyer in Italy, but while the package was in transit, the manila envelope containing the diary slipped out. Believing the faux Egyptian postage affixed to the outside of the envelope to be real, the United States Postal Service shipped the package to Henry Walton Jones Jr. at the University of Chicago.