CREATE TABLE table_16607 ("Date" CLOB, "Founder" CLOB, "Extroversion Scales" CLOB, "People-task orientation scale" CLOB, "Introverted ,  Task-Oriented" CLOB, "Extroverted ,  Task-Oriented" CLOB, "Extroverted ,  Relationship-Oriented" CLOB, "Introverted ,  Relationship Oriented" CLOB, "Moderate" CLOB)

who is the founder where date is c. 1900
SELECT "Founder" FROM table_16607 WHERE "Date" = 'c. 1900'
SELECT "Founder" FROM "table_16607" WHERE "Date" = 'c. 1900'