The Hood River Library will celebrate the 100th birthday of its building with a party Friday night. Library Director Buzzy Nielsen says the cornerstone of the building was laid on October 11 in 1913. Nielsen says there is a time capsule buried under the cornerstone. A celebration is planned for tonight with a Great Gatsby party at the library beginning at 7 p.m. 1920's attire is encouraged. It is free and open to all ages.