I liked The Navy Way.
Three attempts to make two officials and the scores on a chalkboard.
Well, this is certainly going off topic. So I will continue with the nonsense.
If that picture was taken at the 70 Nats, it would have been from the single Qualification day where they used two qualification circles. Finals were held the next day. Best of two flights to qualify, five finalists from each circle. Final scores were determined by best of two flights during the finals rounds.
Bill Netzeband initiated the multi-circle qualification process in the early/mid 60's. The multi circle format has continued since. In 1970, the AMA continued with the multi-circle format and had two qualification circles, taking I think 5 finalists from each circle. There was no seeding in who flew on which qualifying circle. (Don Jehlik, a well known and previous World Champion F2C Team Racer, was selected by the AMA to be the Event Director.)
In the previous AMA process during the qualification rounds, each flyer had three attempts to make two official flights on his selected circle, taking the best single flight to qualify. Based on weather and possible equipment problems, that meant that one year of preparation could be dependent on one 7+ minute flight to go into the final rounds. Later, after PAMPA took over the Nats in 1974, the "Nats Experience" was expanded to mean more than one 7 minute flight for all who chose to enter.
(Even then, there was a complaint from at least one individual who felt he was going to qualify anyway felt the multi-round format developed by PAMPA was too much work.)
Keith