Copyright by The Pictorial News Co., N.Y. No. NN 98. {{PD-US}}
heres a photo that i took back in 1997, when i was working there, it shows the mediocre way they restored the corner pyramids.
(this photo is currently posted at NYArchitecture.com, without my permission and taken from SSC)
WWtower1997 by
Ceva321, on Flickr