Is “Plate - "Niagara"” in the public domain?

Yes. “Plate - "Niagara"” is public domain and released under CC0, so it is free to download and reuse for any purpose, including commercially, with no permission needed.

Can I use “Plate - "Niagara"” commercially for free?

Yes. As a CC0 public-domain work it can be used commercially, modified and redistributed with no fee and no attribution required.

“Plate - "Niagara"” by Helmut Hiatt (c. 1936) is a public-domain (CC0) artwork, free to view, download and reuse for any purpose. It is catalogued from the open collection of National Gallery of Art (Washington).

Plate - "Niagara"

Helmut Hiatt

Title	Plate - "Niagara"
Artist	Helmut Hiatt
Date	c. 1936 20th century
Medium	black and white photograph
Classification	Index of American Design
Holding institution	National Gallery of Art (Washington)
Credit line	Index of American Design
Rights	Public domain (CC0)

About this artwork

“Plate - "Niagara"” is a work by Helmut Hiatt, dated c. 1936. It is executed in black and white photograph and classified as index of american design. This work is in the public domain (CC0), so the image may be downloaded and reused for any purpose without permission (see the licence note below).