Hello-
I think you should also look into Dwaine Lee Little (currently is prison since 1980- suspected in other murders).
Timeline
-1964 Murdered & Raped a neighbor girl, Orla Fay, in Lane County, Oregon sentenced around Feb 11, 1966
-1974 Paroled May 24, 1974 Portland, Oregon (although it appears he had work release for a few years prior for a few hours a day)
-Fall 1974 Little and his parents are living in Jackson County, Oregon. Where the Cowden Family murders occurred. He has always been a suspect.
-May 23, 1975- back to jail on probation violation for having a gun.
-April 26, 1977- released from Prison
-June 2, 1980- Arrested for Rape, and attempted murder of Margie Hunter & unborn child and has been in prison ever since. This was in and around Tigard, Oregon right off 1-5
Dates/years of freedom to cross check with missing Oregon women
May 1974- May 1975 (with work release possible happening from 1972ish-1974)
April 26, 1977- June 2, 1980
But I Trusted You and Other True Cases(Page 32) eBook online Read Details on life and murders
Orla Fay Fipps (1948-1964) - Find A Grave... Orla Fay
Cowden family murders - Wikipedia Cowden Family and reference to Margie Hunter