I just did a quick white pages search. There are two Michael G Devour listings in Detroit. One is age 40 - 44 and the other is aged 55 - 59. I don't know whether this helps at all.
From: Tony Moody <a...@aptech.co.za> To: silver-list@eskimo.com Sent: Monday, May 22, 2017 5:56 PM Subject: CS>Mike Devour not answering Hallo Folks, Mikes Devour, owner of the silver List, mailbox is full, he hasn't answered recent email. Support at Eskimo.com say that his phone rings but there is a generic answering machine message. He lives in south east Michigan according to his page https://www.eskimo.com/~mdevour/boatproject.html Is there anyone in the area who could try to get something more definite? I can't be of much help because I'm round the other side of the world and 9 hours earlier than you in USA. OK,Tony Moody