Jon Johnson, MPSEis an American sound editor of television and feature film. He won the Academy Award for Best Sound Editing for his work on the World War II submarine epic U-571... (wikipedia)
With them having 4 checkbooks and 6 IDs, they may have a long history of doing this.
W e found carbons of checks that show at least 12 times in the last week or two.
Anytime I watch a movie that's set in the 1980s, oftentimes there's equipment from that era, and sometimes you'll see something from HP.
There's a lot of very enthusiastic people out there. Fanatics even.
That's orders of magnitude more than what's at HP Archives, for sure.
T his is just the initial step in this investigation, but they appear to be doing this for a living.