The Fight to Find John Wilkes Booth’s Diary in a Forgotten Subway Tunnel
newsweek.com
newsweek.com
http://www.theverge.com/2014/2/5/5280920/tunnel-vision-bob-d...
The thing I don't get about the story is what motive could NatGeo and/or the city possibly have in covering up the "magnetic anomaly"?
There is something more here. The DOT would more likely forget about Bob if nothing had changed about the situation than just suddenly decide, "nope, deal's off". The Verge article you linked seemed to indicate an uptick in interest and traffic for the tours, but seeing they allowed them for so long, what changed about the relationship that they didn't even want to work with him to decrease any burden on road traffic? It seems like just an excuse to cite safety concerns.
EDIT: is this the same thing? It's late for me, I'm kind of running on fumes http://www.panycarchaeology.org/history_of_panyc.html#Atlant...