Complex sentence: The encyclopedia is a project of Portland State University's History Department and the Oregon Historical Society, with support from Oregon Cultural Trust partners Oregon Arts Commission, Oregon Council for the Humanities, Oregon Cultural Heritage Commission, and the Oregon State Historic Preservation Office.
Split into simpler sentences: The encyclopedia is a project of Portland State University's History Department and the Oregon Historical Society. It has drawn support from Oregon Cultural Trust partners Oregon Arts Commission, Oregon Council for the Humanities, Oregon Cultural Heritage Commission, and the Oregon State Historic Preservation Office.