As a dramatic piece, this was about as good as any made-for-tv movie of the 1970's. The costumes and sets were actually very vivid depictions of life in 1911 New York.
The personal situations were convincing and portrayed more than just the facts of the tragic fire.
However, this account of the fire which killed 146 people departs in significant areas from accounts of the actual incident.
While parts of the story accurately depict real life occurrences, such as the factory supervisor attempting to extinguish the fire instead of evacuating the affected floors, other details were absolutely fabricated and contradict the historical account.
The actual fire was caused by a factory worker carelessly disposing of a cigarette. As this was not sympathetic to the plight of the workers, the cause of the fire in the film was faulty wiring in an overhead lamp. Fire exits were kept locked intentionally by the factory owners, but in the film the only blocked fire door was due to a broken lock for which the key was kept hanging next to the door.
In the real incident, 20 people died as a result of using a fire escape which wasn't maintained and collapsed. This was omitted entirely from the film.
One character jumped into an elevator shaft and rode the top of the elevator to safety. In reality, 19 women died after jumping into the elevator shaft.
In the film, the only child present in the factory was the visiting daughter of the factory supervisor. In reality, half of the 122 women who died on March 24, 1911 at the Triangle Factory were teenagers. The remaining victim, who died six days later in the hospital, was 16 year old sewing machine operator, Sarah Cooper, who initially survived the jump from the 9th floor.
For a compelling period drama about the lives of factory workers in 1911 New York, I recommend this movie. For an accurate account of the tragic fire, there are several documentary films which are available online.