Wm Dewey Jr. - http://gem.idgenweb.org/histry-montour.html
"Col" Wm. H. Dewey (Sr)and sons Wm & Edward H, had major mining interests in Silver City, Thunder Mountain & Pearl.
The town of Montour was slightly east of the Marsh-Ireton Ranch. The present-day Bureau of Rec Montour Park is on the old school site.
Payette Co. genweb has put an index of Mills' book on-line - http://payettecounty.info/books/iretonindex.html
Gem Co. CC, gem.idgenweb.org