The Oregon capitol building burned in the spring of 1935, destroying most records. What the fire did not destroy, the water damaged. If anything survived, it went to the Oregon Historical Society and the State Archives.
Six hours is barely enough time to teach Legislative History 101, but you can still join in the (admittedly wonkish) fun on October 23rd, 2015:
Legislators, lawyers, law students, paralegals, librarians and other legal researchers are welcome to attend or purchase the course materials.