I have had good luck contacting folks via the PCGS Registry Set boards, the ones with the little e-mail icons next to their sets agree to accept e-mails from other collectors. I managed to get to #3 on the Complete Kennedys this way, and met some really, really nice folks along the way as well. Good luck!
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Wondercoin
Welcome, I collect Mercurys.
Be assured you'd be in good hands with either manofcoins or wondercoin!
Here's a warning parable for coin collectors...
President, Racine Numismatic Society 2013-2014; Variety Resource Dimes; See 6/8/12 CDN for my article on Winged Liberty Dimes; Ebay