CREATE TABLE table_62338 ("Year" FLOAT, "Drivers" TEXT, "Team" TEXT, "Duration/Distance" TEXT, "Race Title" TEXT, "Championship" TEXT)

Was the Grand Prix Watkins GLen that Miles Collier raced in before 1952 a championship?
SELECT "Championship" FROM table_62338 WHERE "Year" < '1952' AND "Race Title" = 'grand prix watkins glen' AND "Drivers" = 'miles collier'
SELECT "Championship" FROM "table_62338" WHERE "Drivers" = 'miles collier' AND "Race Title" = 'grand prix watkins glen' AND "Year" < '1952'