l. b. day (february 22, 1932 – october 24, 1986) was an american labor union leader and elected official in the state of oregon. day served as an international brotherhood of teamsters official, state representative, state senator, and appointed official in both the oregon state executive office and the u.s. department of the interior. a longtime supporter of the oregon state fair, the l. b. day comcast amphitheatre on the oregon state fairgrounds in salem is named in his honor.