Concetta Maria Scaravaglione (July 9, 1900-September 4, 1975) was an American sculptor. In 1947 Scaravaglione won the Prix de Rome award from the American Academy in Rome, which made her the first woman to ever be awarded that honor.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Concetta_Scaravaglione

Railway Mail, 1862 by Concetta Scaravaglione
1936 / Aluminum / 4’1″x1’7″x1’1″ / Ariel Rios Federal Building, Washington, D.C.

Concetta Scaravaglione on Artnet: http://www.artnet.com/artists/concetta-scaravaglione/

Further reading:
https://americanart.si.edu/artist/concetta-scaravaglione-4284
https://www.vmfa.museum/piction/94061105-123111076/
https://www.nytimes.com/1975/09/06/archives/concetta-scaravaglione-is-dead-prizewinning-sculptor-was-75.html