By Ben Protess, Jessica A. McHugh and Mac William Bishop
The New York Times DealBook
Manhattan’s Financial District offers a wealth of history. Richard M. Warshauer, a senior managing director at Colliers International, has been leading the Museum's annual Great Crash Walking Tour for more than 20 years. Earlier this year, DealBook’s Ben Protess took a walk with Mr. Warshauer to see what he could learn.