CREATE TABLE table_69433 ("School" CLOB, "Location" CLOB, "Mascot" CLOB, "# / County" CLOB, "IHSAA Class" CLOB, "Year Joined" FLOAT, "Previous Conference" CLOB)

which # / county is correct for year less than 1981 and chalmers as location?
SELECT "# / County" FROM table_69433 WHERE "Year Joined" < '1981' AND "Location" = 'chalmers'
SELECT "# / County" FROM "table_69433" WHERE "Location" = 'chalmers' AND "Year Joined" < '1981'