Like the Battle of Trafalgar); ROBOT (25A. Unpaid factory worker); SAMOA (20A. Polynesian land); TEPEE (68A. Conical home); TRADE (28D. Vocation); TREKS (67A. Wilderness walks); VESTA (56A. Goddess of home and family). Three- and four-letter -- ANG, ANTE, BAH, BIB, DAHL , DYE, ELMS, ERIK, FORE, GAS, GMT, HOW, IMUS, JOAD