Abstract: Legislative papers of Walter J. Chilsen, a Republican leader from Wausau who served in the Wisconsin Senate (1967-1989), consisting primarily of materials from his tenure in office. The collection documents Chilsen's leadership of the Senate Republican Caucus (1967-1972), his relationship with Governor Patrick Lucey, and his prominence in committee work on various key issues. There are extensive files on his participation as a private citizen in numerous advocacy organizations. Local issues concerning Wausau and Langlade, Marathon, and Shawano counties are also prominent. Within the subject files are press releases, form letters, newsletters, and speeches and material on Chilsen's reelection campaigns.