Is “Knife Sharpener” in the public domain?

Yes. “Knife Sharpener” 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 “Knife Sharpener” 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.

“Knife Sharpener” by Lionel Ritchey (c. 1939) 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).

Knife Sharpener

Lionel Ritchey

Title	Knife Sharpener
Artist	Lionel Ritchey
Date	c. 1939 20th century
Medium	watercolor, graphite, and colored pencil on paperboard
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

“Knife Sharpener” is a work by Lionel Ritchey, dated c. 1939. It is executed in watercolor, graphite, and colored pencil on paperboard 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).