The ways to find a person in USA?

Korg77

New Member
Mar 31, 2005
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Moscow
it's absolutely offtopic, but maybe someone can give an advice what should i do in next situation:

Many years ago my grandfather immigrate to USA. He lived in Manchester until 1984. My parents kept in touch with him and his family until 1984, the year he left. Due many reasons his children change the location, and when 7-8 years ago i tryed to find them all letter were returned to sender.

Who can tell - is there any organizations can help to find a person i'm searching for? All i know - are names, last adres.