RPO 500 0 Donald Duke Collection Pacific Electric’s first Railway Post Office unit was no. 500. Donald Duke Collection RPO 5002010-03-122011-11-19https://www.pacificelectric.org/wp-content/uploads/2018/05/peryhs-logo-350.pngPacific Electric Railway Historical Societyhttps://www.pacificelectric.org/wp-content/uploads/2018/05/peryhs-logo-350.png200px200pxRecent PostsRiding the Heavy Iron on San Pedro StreetThe Maguire Family and Mount LoweApril 9, 1961: Morgan YardApril 9, 1961: Main Street Station Leave a Comment Cancel reply Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.