Robert Moon

Directory

References

Discover

Battle of the Alamo from "Texas: An Epitome of Texas History from the Filibustering and Revolutionary Eras to the Independence of the Republic, 1897. Texas Revolution, Texas revolt, Texas independence, Texas history.

6 Wars of Independence

African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

Timeline of the American Civil Rights Movement

illustration of the walking titanosaurus, Patagotitan mayorum

Titanosaurs: 8 of the World's Biggest Dinosaurs

Two chicks near an egg with a white background (poultry, chick, chickens, birds).

What Do Eggs Have to Do with Easter?

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Rural Irish landscape, Sligo, Ireland.

Why Is Ireland Two Countries?

New Zealand. Political/Physical map. Includes locator.

Where Is “Old Zealand”?

Robert Moon

American postal inspector

Learn about this topic in these articles:

history of postal codes

In postal codes
Robert Moon, a postal inspector in Philadelphia, first suggested using a system of codes to refer to general regions in the country in 1944. His idea was accepted and expanded upon by a committee at the USPS, which included additional digits in order to pinpoint…
Read More