The John Addison family lived in the Lorane, Oregon for many years, running a large lumber mill. Then, some of them moved to Klamath County, Oregon and others to Humboldt County, California where they moved their mill operation. I wrote a book, "Sawdust & Cider; A History of Lorane, Oregon and the Siuslaw Valley" in 1987 and am currently in the process of doing a major update on it. I have quite a large section on the Addison family and their mill. I would welcome more information for the new book.
Also, you asked for living descendants of the Addison family. There is one gentleman still living in Lorane whose mother was an Addison. If you will email me at firstname.lastname@example.org, I can give you more information.