CREATE TABLE table_3494 ("Institution" CLOB, "Nickname" CLOB, "Location  ( all in Minnesota ) " CLOB, "Founded" FLOAT, "Type" CLOB, "Enrollment" FLOAT, "Joined" CLOB)

What was the earliest date an institution was founded that joined in 1977?
SELECT MIN("Founded") FROM table_3494 WHERE "Joined" = '1977'
SELECT MIN("Founded") FROM "table_3494" WHERE "Joined" = '1977'