From the record
“The Cascade Building is a historic high-rise located at 520-538 SW 6th Avenue in Downtown Portland, Oregon. It was built in 1925 and was listed on the National Register of Historic Places on February 23, 1989.”
Wikipedia article Cascade Building, CC BY-SA 4.0.
One of 650 National Register listings published here for Multnomah County · listed in 1989 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service





