CREATE TABLE table_203_263 (id DECIMAL, "alumni chapters and clubs" TEXT, "location" TEXT, "founding date" TEXT, "years active" TEXT, "province" TEXT)

how many chapters or clubs were founded in or before 1950 ?
SELECT COUNT("alumni chapters and clubs") FROM table_203_263 WHERE "founding date" <= 1950
SELECT COUNT("alumni chapters and clubs") FROM "table_203_263" WHERE "founding date" <= 1950