Hi Marian, I found in 1930 John and Malissa were living in Seattle, King Co., WA. John T. Telford, b. OR, 38 yrs old, marr @ 25, public accountant. Malissa J., wife, b. WA, 32, marr @ 20.
You can request a copy of her obituary from Random Acts Genealogical Kindness, raogk.org/oregon.htm, read guidelines, choose Oregon, choose Clackamas Co. and choose one volunteer. Successful Searching!