There are 82 items in the collection, you could do a little scraping and run all the downloads through uGet or similar download manager.
Plus, each item has an auto-generated torrent. They aren't very fast generally, but you could theoretically seed the directly downloaded files if you were interested in helping distribute this.
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I wonder if there's a torrent download of the entire archive.. Looks like this is pretty close:
The Internet Archive's Whole Earth collection (98.5 GB) - https://archive.org/details/wholeearth