The Open Valve" was an industrial magazine distributed to the workers of the Nordstrom Valve Division of Rockwell Manufacturing Co., Oakland, California. Issues frequently had article about the employees and various celebrations. In this issue a farewell is noted with a photograph. The cover of this issue features a woman in costume for "Old California". There's a "Rockwell Report" from W. F. Rockwell, Jr., President of Rockwell Manufacturing Company. The feature article is on "Down El Camino Real" with a focus on the Mission at San Luis Obispo, Mission San Miguel Arcangel, Mission San Gabriel Arcangel. There's also information on fishing and softball. Another article about Salesmen visiting the plant. There's "A Quiz for Home-Makers". The back cover is a photographic image of Mission Carmel.