Hudson, Leslie A. Chicago Skyscrapers in Vintage Postcards, p. 82. Arcadia Publishing, 2004. ISBN9780738533421. Accessed January 31, 2024. "City Hall Square Building 131. Christian A. Eckstorm, 1912: 139 N. Clark Street (C2). In this view, looking north on Clark Street, the neo-classical high-rise building on the right was City Hall Square Building. The 21-story of building faced City Hall. and its facade featured ornamental stone cladding on the uppermost and lowest floors. The building was demolished to make way for the Richard J. Daley Center, built in 1965."
