Reposts are fine after a year or so (https://news.ycombinator.com/newsfaq.html) but this one had a big thread a few months ago:

Calculus Made Easy by Silvanus P. Thompson (1910) - https://news.ycombinator.com/item?id=38057837 - Oct 2023 (60 comments)

Others:

Calculus Made Easy (1910) - https://news.ycombinator.com/item?id=27991120 - July 2021 (97 comments)

Ask HN: Links to older resources like Calculus Made Easy - https://news.ycombinator.com/item?id=23272635 - May 2020 (4 comments)

Calculus Made Easy (1914) [pdf] - https://news.ycombinator.com/item?id=23257303 - May 2020 (67 comments)

Calculus Made Easy (1910) - https://news.ycombinator.com/item?id=18250034 - Oct 2018 (68 comments)

Ask HN: Books Like 'Calculus Made Easy'? - https://news.ycombinator.com/item?id=14166466 - April 2017 (8 comments)

Calculus Made Easy (1914) [pdf] - https://news.ycombinator.com/item?id=14161876 - April 2017 (189 comments)