CREATE TABLE table_66688 ("Rank" TEXT, "Name" TEXT, "Height ft  ( m ) " TEXT, "Floors" FLOAT, "Year" FLOAT, "Address" TEXT)

What is the 123 south broad street address name before 1973?
SELECT "Name" FROM table_66688 WHERE "Year" < '1973' AND "Address" = '123 south broad street'
SELECT "Name" FROM "table_66688" WHERE "Address" = '123 south broad street' AND "Year" < '1973'