I suggest getting his death certificate and obituary. I don't know if it is better to get the death certificate through the Oregon Health Dept or the Oregon State Archives. Check with a local historical or genealogical organization or library for the obit although it looks like the University of Oregon has a number of newspapers: http://www.rootsweb.ancestry.com/~ormultno/News/holdings.htm
I couldn't find Edwin or any Hufsmith born in around 1877 in Monroe County in the census that would fit. For research in Monroe County try the Monroe County Historical Association. They have a fine collection of records. Most likely he would appear in the baptismal records of Zion Lutheran Church of Brodheadsville, Salem Union Church of Gilbert, St Matthews Union Church, Kunkletown and possibly Christ Union Church of Hamilton Twp. However, it is possible he was baptized as a Methodist.