Write Yourself a Scheme in 48 Hours (2007) Posted by ducaale on Monday October 14, 2019 @05:48PM from the en.wikibooks.org dept. https://en.wikibooks.org/wiki/Write_Yourself_a_Scheme_in_48_Hours ( 6 comments | 124 points | on HN )
For this reason, I'd rather work with the wiki version than the PDF.
2013: https://news.ycombinator.com/item?id=6619799
2010: https://news.ycombinator.com/item?id=1378043