The last active station overlooking the Willamette Valley, Green Peter Lookout first went into service as a cabin in 1916, which was soon replaced with a cupola lookout in 1920. In 1970 the Linn Forest Protection Ass’n. and the Oregon Dept. of Forestry moved the present L-4 live-in cab to the site from Jordan where it was originally constructed in 1949.

Additional information courtesy of Jim Basting: "In 2000 we had a new tin roof put on which changed the roof line. Also in 2004 the lookout was rebuilt. It was torn down to the stud walls and all dry rot was removed and replaced with new material. New windows, door, siding, shutters, trim, catwalk and guard rail were all replaced. It is holding up well and still looks brand new."; "With the advent of “smoke detection” cameras we no longer man Green Peter Lookout. There is a camera mounted on top of a 120 foot tall radio tower adjacent to GPLO which makes a 360 degree rotation every six minutes and can be controlled manually if a fire is spotted. It is very interesting technology and seems to work fairly well. We also have a “smoke detection” camera on Cougar Rock ( A USFS repeater site) about 13 miles to the East of Green Peter that covers the Cascade Mountain portion Sweet Home Unit of the South Cascade District. This camera covers a portion of what the USFS Iron Mountain Lookout used to see."