CREATE TABLE table_23906 ("School" CLOB, "Location ( s ) " CLOB, "Control" CLOB, "Type" CLOB, "Accreditation" CLOB, "Founded" CLOB, "Enrollment" CLOB)

What is the control type which was founded in 1818?
SELECT "Control" FROM table_23906 WHERE "Founded" = '1818'
SELECT "Control" FROM "table_23906" WHERE "Founded" = '1818'