One or more of the preceding sentences incorporates text from this source, which is in the public domain: Smith, Wilber E. (October 1958). "The Federal Urban Highway Program". Illinois Municipal Review. Springfield, Illinois: Illinois Municipal League: 227–230. ISSN0019-2139. Retrieved February 7, 2016.
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One or more of the preceding sentences incorporates text from this source, which is in the public domain: Smith, Wilber E. (October 1958). "The Federal Urban Highway Program". Illinois Municipal Review. Springfield, Illinois: Illinois Municipal League: 227–230. ISSN0019-2139. Retrieved February 7, 2016.