You can buy their book on Amazon.
Released by August of 2001
N|ST?
Had free reign to do as they pleased on floors 90-91 with construction elevator access
Because "artists" need "art supplies".
L0wer M♤nh♤ttan CuItural CounciI

https://www.amazon.com/dp/3883755079/ref=cm_sw_r_cp_apa_fabc_N5XZFbJFMNKK9?_encoding=UTF8&psc=1 https://twitter.com/iNewsTV/status/1336190876209451010?s=19

Limited to I think 200 copies, you can buy one anywhere from around $800 - $2,700.
Perfect cover story?
Well it was for a while.

I got my copy

Its a very creepy book, the vertical lines are raised on the book so its like your touching the tower.
Then the label area of the binding has the balcony they constructed with a guy outside of the building.

Random drawings, sketches, and HD printed pictures.
@MoreheadPatriot

Here are the Amazon comments from GeIatin: The B-Thing WTC 2001