CALIFORNIA CHRONICLES SCRAPBOOK • 1.

Long ahead of their time, Walt and Bob collaborated to incorporate an operable "air brake" system into the model railroad, in which compressed air, sophisticated electronics, and a streetcar controller were combined to provide a realistic start-and-stop feel. The period of Bob's and Walt's early friendship still offered significant streetcar and interurban operations throughout California. Through the viewfinders of their folding 120, 620, or 616 cameras, Walt and Bob personified a futuristic adaptation of a different adage: Have Camera - Will Travel. Fortunately for all of us, Bob and Walt's photography was better than most, and was well-preserved for posterity. [Extracted from the article]