Rick Hornbeck will be giving a seminar this Thursday, October 10th at 3pm in 3 Rockefeller.
The title of his paper is:
"Railroads and American Economic Growth: A "Market Access" Approach"

You can view his schedule at the link below
https://docs.google.com/spreadsheet/ccc?key=0As0WQNxSJWZVdEpYbjFobmktckVfXzk5Wmtwa1hFR2c&usp=sharing