>>164
As >>165 said it's currently down. It was up at the time of >>159.
https://mitpress.mit.edu/sites/default/files/sicp/full-text/book/book.html
However a bit of digging still shows it here:
https://mitp-content-server.mit.edu/books/content/sectbyfn/books_pres_0/6515/sicp.zip/full-text/book/book.html
The pdf from MIT:
https://web.mit.edu/6.001/6.037/sicp.pdf
A backup of the MIT pdf:
https://endchan.net/tech/res/15059.html#15104