Mendelsohn, Joyce (1998), Touring the Flatiron: Walks in Four Historic Neighborhoods, New York: New York Landmarks Conservancy, ISBN 0-964-7061-2-1, OCLC 40227695
Mendelsohn, Joyce (1998), Touring the Flatiron: Walks in Four Historic Neighborhoods, New York: New York Landmarks Conservancy, ISBN 0-964-7061-2-1, OCLC 40227695