As part of the celebration of the 100th anniversary of Old 300, the Astoria Riverfront Trolley, there will be an open house from 9 a.m. to 4 p.m. May 18 at the Trolley Barn, 480 Industry St. The public is welcome.

On display will be all the tools and equipment used to maintain and restore the trolley, and motormen and maintainers from the Trolley Association will be on hand to provide information about the trolley..

For information, call Frank Kemp at 503-325-4268.