CREATE TABLE table_73421 ("Year" FLOAT, "Date" CLOB, "Driver" CLOB, "Team" CLOB, "Manufacturer" CLOB, "Laps" CLOB, "Miles  ( km ) " CLOB, "Race Time" CLOB, "Average Speed  ( mph ) " CLOB, "Report" CLOB)

What date was the race in 1968 run on?
SELECT "Date" FROM table_73421 WHERE "Year" = '1968'
SELECT "Date" FROM "table_73421" WHERE "Year" = '1968'