Wednesday, June 7
EXPO OBSERVED (NBC, 9-10 p.m.) Edwin Newman turns guide and critic for a tour of Montreal's Expo 67.
Thursday, June 8
SUMMER FOCUS (ABC, 10-11 p.m.). "Marathon: The Story of the Young Drug Users" explores the tormented world of young addicts during a marathon group-therapy session at Daytop Village, on Staten Island, N.Y.
Friday, June 9
NURSES: CRISIS IN MEDICINE (ABC, 9-10 p.m.). The role of the nurse in today's ever-expanding, ever-more-complex medical worldwhat is expected of her and how her job has changed. Eddie Albert narrates.
Saturday, June 10