From Oregon Historical Society
“Located on the historic South Park Blocks in downtown Portland, the Oregon Historical Society’s museum is open seven days a week and features original and traveling exhibitions that tell stories of the people, places, and events that have shaped Oregon and American history. The OHS research library is open Tuesday through Saturday and holds a vast collection of photographs, manuscripts, books, maps, films, and audio recordings. Monthly programs are typically free and open to the public and feature authors, historians, and artists.”