uhhhh... I can give you further directions as soon as you enter Wisconsin after your 860 mile trip!! LOL, seriously, it is a local independent bank called the Bank of ******** (insert city name...it's a very small city (3000 people) so I don't feel comfortable posting my city's name). It's been there since 1895. Wish I could go back then to get rolls of morgan dollars!
One strategy is to check out banks in communities with large populations of seniors. Sooner or later someone will turn in a large coin hoard thats been collecting dust since the 60's.