Original old petroleum trade magazine vintage article titled DISTRESSED GASOLINE PRICES.  Surplus capacity plus excessive stocks.  Here's yardstick for measuring the impact.  By P.C. White, G.C McKeague, and J.R. Brauweiler.  Presented to a session of the Division of Refining during the annual API meeting.  This 1962 four page oil and gas industry article would make a nice addition to your library.