Color Deconvolution / "Depainting"

[nablator]

The problem is I took the TIFFs from archive.org, they are no longer available from Yale site, so I'm not even sure about their status.

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Rights
The use of this image may be subject to the copyright law of the United States (Title 17, United States Code) or to site license or other rights management terms and conditions. The person using the image is liable for any infringement.

I guess non-commercial derivative works fall under fair use.

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So you need to credit the Beinecke Rare Book and Manuscript Library, Yale University.