author
Best known for writing about the U.S. mail system in the early 20th century, this author offers a clear, practical look at how postal service shaped everyday American life.

by Louis Melius
Louis Melius is known as the author of The American Postal Service, a nonfiction work about the history and operation of the United States mail. The book has been preserved in public-domain archives, which confirms his connection to that title.
Reliable biographical information about him appears to be very limited in the sources I could confirm during this session. Because of that, it is safest to describe him as an early-20th-century writer remembered primarily for his work on postal history and public service rather than to make stronger claims about his life.
His surviving work suggests an interest in institutions, communication, and the everyday systems that helped connect people across the country.