White Lynx:
Cautiously moving around the fountain, Lynx rushed to Goodwill’s body. It was over, and while Blackjack was down for the count, it felt like they were the ones that lost. Still, she had noticed earlier that Goodwill had picked up the paper that the other man dropped. Carefully, she searched his pockets for the note. Maybe something could be done yet.
The paper turns out to be an envelope... On the back of the envelope, someone (guess whom) has scribbled very complex chemical formulae, with notes on the ways that certain molecular compounds should interact and react together...
The envelope itself is from a firm in New Jersey ("SciLabCo") that apparently sells expensive laboratory equipment... It's a reminder of payment due on a shipment (of a variety of stuff, but especially a lot of transistors)... Billing, specifically, a "Dr. Norwood."
The envelope is the kind with the see-through cellophane window. The piece of paper that went inside, with Dr. Norwood's mailing address, is gone. An itemized list of stuff being billed for that the letter refers to is also missing (maybe they were on the front and back of the same sheet?) Only the original letter itself remains.