Notable architects whose work is represented in the NHLs of the state include: Alexander Jackson Davis (7 sites), Andrew Jackson Downing (2), William West Durant (2), Leopold Eidlitz (2), Cass Gilbert (2), Henry J. Hardenbergh (2), Raymond Hood (3), Philip Hooker (2), Minard Lafever (7), John McComb Jr. (3), Frederick Law Olmsted (3), Isaac G. Perry (2), George B. Post (3), James Renwick, Jr. (4), Henry Hobson Richardson (2), Louis Sullivan (2), Richard Upjohn (6), Calvert Vaux (6), and Frederick Clarke Withers (2). The firm McKim, Mead, and White participated in design of at least six buildings later declared to be NHLs. It was also that firm's work, Pennsylvania Station, whose pending demolition in 1963 launched a historic preservation movement in New York City and led to creation of the New York City Landmarks Preservation Commission in 1965.