Consulting the Library of Congress copyright renewal list shows that the copyright lapsed and was not renewed. King Features has, however, trademarked Krazy Kat and related images, and so these images may not be used for commercial purposes.
<p>Detail of a Sunday page in which Ignatz, disguised as a painting, hurls a brick at Krazy Kat who interprets it as an expression of love.
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Artist: <a href="https://en.wikipedia.org/wiki/George_Herriman" class="extiw" title="en:George Herriman">George Herriman</a><br>Published November 7, 1937
<bdi><a href="https://en.wikipedia.org/wiki/en:George_Herriman" class="extiw" title="w:en:George Herriman"><span title="American cartoonist (1880-1944)">George Herriman</span></a>
</bdi>
1937
Image from <a rel="nofollow" class="external text" href="http://www.greatcaricatures.com">GreatCaricatures.com</a>