What was the earliest date an institution was founded that joined in 1977? 
CREATE TABLE table_261913_1 (founded INTEGER, joined VARCHAR)
SELECT MIN(founded) FROM table_261913_1 WHERE joined = "1977"
### Context: CREATE TABLE table_261913_1 (founded INTEGER, joined VARCHAR) ### Question: What was the earliest date an institution was founded that joined in 1977?  ### Answer: SELECT MIN(founded) FROM table_261913_1 WHERE joined = "1977"