Okay, mystery solved: It's a reference to the "Libertech Project", but it doesn't name Chuck Hamill or "From Crossbows to Cryptography". Jim Bell On Thursday, November 7, 2019, 03:40:38 PM PST, jim bell wrote: I just did a search of my AP essay. I didn't find a reference to Chuck Hamill's essay, "From Crossbows to Cryptography" in it. [1]https://nakamotoinstitute.org/static/docs/from-crossbows-to-cryptogr aphy.pdf What is going on? I cannot imagine NOT having cited Hamill's essay. It, perhaps more than any other single thing, inspired me to write my AP essay. Please help me solve this. Jim Bell References 1. https://nakamotoinstitute.org/static/docs/from-crossbows-to-cryptography.pdf