Thanks for your your help. Have received a copy from the Longyear Research Library of the interview with my relation (John Bowden), also, obituaries of family members, photographs of the Negaunee area, etc. - they have been really helpful. You have to pay a fee for this service but it's well worth it as I would have a long way to travel to visit the library.
Would be interested to hear from anyone with connections to the following families in Marquette County: Allen, Bath, Bowden, Curnow, Searle, Toms