In 1979, the New York City Landmarks Preservation Commission designated the space within the boundaries of the original station, excluding expansions made after 1904, as a city landmark. The station was designated along with eleven others on the original IRT. During the late 1970s and early 1980s, the station was renovated; much of the original wall surface on the northbound platform was covered by glossy dark blue tiles about thick. The renovation preserved the station name plaques and mosaics. The Wall Street station's renovation was the first of six projects under the Metropolitan Transportation Authority (MTA)'s Adopt-a-Station program. Fundraising efforts were led by the Downtown Lower Manhattan Association, which enlisted support from the Chase Manhattan Bank and American Express, two companies whose buildings were directly served by the station.