THE BLUE MOUSE THEATER
Per the website: PSTOS - Blue Mouse (Globe) Theatre, Portland Oregon In 1958, the Blue Mouse faced eviction when the property was sold and the building was to be torn down. Mr. Forsythe removed the Blue Mouse sign and moved it to the former Capitol Theatre building in August, 1958.
For additional information check out: Blue Mouse | Oregon Theater Project (uoregon.edu) and Blue Mouse Theatre - Wikipedia