Terry J. Reedy added the comment:
Pending improving the our docs, I would like to replace the Archive link, which is slow to respond. Issue: there is no copyright notice. Once might expect it to belong to NMT, but they seem to have disowned it by removing the web pages. The dead links should be removed from any copy. The .pdf line in the does work at this moment.
If not a work-for-hire, the copyright belonged to Shipman, and now his estate. I would not add it to the PSF site without formal permission, but I don't see why linking to one unauthorized copy versus another would make much difference.
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versions: +Python 3.10 -Python 2.7, Python 3.6, Python 3.7
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Python tracker
https://bugs.python.org/issue37149
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