Robert Moon (postal inspector) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Robert Moon (postal inspector)" in English language version.

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nytimes.com

Martin, Douglas (2001-04-14). "Robert Moon, an Inventor of the ZIP Code, Dies at 83". New York Times. Retrieved 2017-09-23.
New York Times: Robert Moon, an Inventor of the ZIP, dies at 83. Accessed 23 Sep 2022.