123. When California Was the Bear Republic (resobscura.blogspot.com)
126. Showers – 19th century luxury and health (homethingspast.com)
138. Maruti Hard Real-Time OS (1996) (web.archive.org)
140. Serverless QBasic (psuter.net)
142. Barbie typewriter (2015) (cryptomuseum.com)
146. A Parable by Dijkstra (1973) (cs.utexas.edu)
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