John Randel's impact on New York City was the subject of an exhibition at the Museum of the City The Greatest Grid-- The Master Plan of Manhattan 1811-2011.
of New York:
You can still view much of the exhibit online: http://www.mcny.org/exhibitions/past/The-Greatest-Grid.html
Randel is the subject of a new biography by Marguerite Holloway, who visits on Thursday.
More about her visit: http://www.albany.edu/writers-inst/webpages4/archives/holloway_marguerite13.html