US War Department California Debris Commission Correspondence 1922-1923. These are two documents-one from the California Debris Commission and Engineer Department US Army for field service in Rio Vista California regarding a return to duty. Dated May 1922. The other is from the California Debris Commission and 3rd San Francisco District Engineer Office United States Army regarding annual leave. Dated May 1923. There is also an envelope as well, torn but predominately intact. Both items are used. Shipped USPS Ground Advantage.