One of the Earliest Traffic Studies of the Newly Built New Altamont Road, Prepared as a Civil Engineering Thesis at the University of California’s College of Engineering by Future Prominent Engineer John M. Sardis, Based on His 1938–1939 Winter Field Study Investigating the Causes of Increased Fatal Accidents, with Seven Original Gelatin Silver Photographs of the Road and Nine Graphs and Maps Documenting Traffic Counts, Vehicle Speed Analyses, and Speed Distributions. Ca. 1939.