I'm trying to find the printer of a serigraph by Paul Mitchell from back in 1974 for the World Trade Center. It is a numbered and signed print and I would like to have it authenticated. Funny how things turn up anywhere. I found this at a garage sale on a small island in western Canada. The glass was cracked, so it was priced to sell! Maybe your father or uncle was a pressman back in the seventies and recalls seeing it. I'd love to talk to that person.