Columbia Gardens, Butte, MT
Roller Coaster - 1906-1974

Council Crest, Portland, OR
Scenic Railway - 1905-1926

gayway park, seaside, OR
Roller Coaster - 1953-1983?
Wild Mouse - 1953?-1983?

gayway/Fun Forest, Seattle, WA
Broadway Trip - 1962-1962
Wild Mouse - 1962-1964
Wild Mouse - 1965-1971

Happyland, Vancouver, BC
Giant Dipper - 1925-1947
Baby Dipper - 1928-1944

Hastings park, Vancouver, BC
Coaster (Dip The Dips) - 1915-1924

Jantzen Beach, Portland, OR
Big Dipper - 1928-1970
Whirlwind - 1929-195?

julia davis fun depot, boise, id
Mad Mouse - 1991-2002

Lotus Isle, Portland, OR
Alpine Scenic Railway - 1930-1931

Luna Park, Seattle, WA
Great Figure 8 - 1905-1913

Nat Park, Spokane, WA
Figure 8/Scenic Railway - 1905-1919
Jack Rabbit - 1920-1968

Oaks Park, Portland, OR
Scenic Railway - 19?-19?
Figure 8 - 1905?-19?
Zip - 1927-1934
Mad Mouse - 1959-1976?
Monster Mouse 1977(?)- 1994

Playland, Coeur d' Alene, ID
Kiddie Coaster - 1942-1974

Playland, Seattle, WA
Dipper - 1930-1961

Playland, Vancouver, BC
Mad Mouse - 1958-1978
Super Big Gulp - 1972-1994
Wild Mouse - 1979-2008

puyallup fair, puyallup, wa
Mad Mouse - 195?-196?
Mad Mouse - 196?-197?
(Both coasters no longer run at fair)

Santafair-Touray, federal way, wa
Mad Mouse - 195?-196?
(Later operated at Puyallup Fair)

Stanley Park , Vancouver, BC
Dips - 1913-1923?

White City, Bellingham, Wa
Roller Coaster - 1906-1912

White City, Seattle, WA
Roller Coaster - 1908-1912

White City, Vancouver, bc
Dips - 1926-19?
(Operated at Hastings Park)

Figure 8 , Oaks Park, Portland, OR

Scene with Figure 8 coaster 1907

The photo above is an early scene taken at Oaks Park in 1907. Centered in the picture is the Figure 8 coaster. Currently, there is not much known about this ride except that it might have been Oaks first roller coaster. My guess is it opened the same year as the park in 1905. More research is needed.