You can read about his candidacy for delegate here in the 1960 Voter's Pamphlet on page 45.
From what we know of him, he worked for Congresswoman Edith Green in the late 50s and early 1960s. He was Secretary and eventually Chair of of the Multnomah County Democrats in the mid-50s.
|Jim Harrison (Photo from VPS)|
Aside from what is mentioned in his delegate VPS, I have been able to find no other info on him. If you know of any more information please feel free to post it.