1929: The lookout was established with a tent camp.
1930: 12'x12' frame cab. (Kresek)
June 1932: "In order to build the lookout house at this point, the pile of rock had to be shot away." (Six Twenty-Six)
August 1935: "When the Circle Peak lookout hooked up his telephone this summer it was grounded. He could hear others talk, but could not talk or ring out. He had the packer's test set and called the station for information. I told him to check everything I could think of, but telephone trouble shooting from the other end of the line is not so good. After the lookout looked for the trouble for two days I went up to see if I could find it. When I started checking the line into the lookout house I noticed that one end of the vacuum tube loose where it joins into the copper end. I pulled the tube out and found it was full of water, probably from snow melting and running into the broken end. The water was making a contact between the carbons and grounding the whole system. Hunters or someone last fall had thrown the switch and left it on, and lightning had burned out the bell coils, and I imagine the lightning caused the vacuum tube to break loose from the end connection. Hubert Wilson" (Six Twenty-Six)
July 27, 1961: Mr. and Mrs. Harry Gladsjo and son Ronnie spent the weekend at Circle Peak where their son Harry is working in the lookout." (The Arlington Times)
1967: Destroyed. (Kresek)
The NGS Data Sheet
DESCRIBED BY COAST AND GEODETIC SURVEY 1950 (WRH) THE STATION IS LOCATED IN THE MOUNT BAKER NATIONAL FOREST. IT IS ON A LOW RIDGE THAT LIES BETWEEN THE SUATTLE AND WHITECHUCK RIVERS, ABOUT 13 MILES AIRLINE EAST OF DARRINGTON, ABOUT 29 MILES AIRLINE SOUTHEAST OF CONCRETE, AND ABOUT 21-3/4 MILES AIRLINE SOUTH-SOUTHEAST OF MARBLEMOUNT.
THE STATION IS A WOODEN BUILDING THAT IS 14 FEET SQUARE AND ABOUT 12 FEET TALL. THE BUILDING SITS ON THE GROUND AND HAS A V-TYPE ROOF. THE OBJECT THAT WAS INTERSECTED IS THE CENTER OF THE ROOF.