Hi,
From Wikipedia
At 9:49 a.m. on Saturday
July 28,
1945, a
B-25 Mitchell bomber accidentally crashed into the north side between the 79th and 80th floors, where the offices of the
National Catholic Welfare Council were located. The fire was extinguished in 40 minutes. 14 people were killed in the accident
[3].
Following the accident, elevator operator
Betty Lou Oliver survived a plunge of 75 stories inside an elevator, and currently holds the Guinness World Record for the longest survived elevator fall recorded
[4].
Take a look also in on the Empire State building's official Website, there are some answers by family members on the websites forum.
Also see in
http://history1900s.about.com/od/194...mpirecrash.htm
JB's serial numbers has the plane. B25D-20 41-30577
Somewhere I have seen a photo of the 'plane stuck in the building.
Alex