Is “Door Knocker” in the public domain?

Yes. “Door Knocker” 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 “Door Knocker” 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.

“Door Knocker” by Winifred Luten (c. 1940) 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).

Door Knocker

Winifred Luten

Title	Door Knocker
Artist	Winifred Luten
Date	c. 1940 20th century
Medium	watercolor, graphite, and pen and ink 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

“Door Knocker” is a work by Winifred Luten, dated c. 1940. It is executed in watercolor, graphite, and pen and ink 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).