SW Park Avenue, 1964 Posted on January 26, 2023 by Vintage Portland 17 SW Park Avenue near SW Alder Street, 1964. Byron Hoyt’s Sheet Music Service was located at 531 SW Park Avenue. City of Portland (OR) Archives, A2010-002.970. View this image in Efiles by clicking here. Rate this:Share this:FacebookPinterestTwitterEmailRedditLike this:Like Loading...