Among all the things Professor Knuth is famous for is writing an Algol compiler for the Burroughs 205 in assembly on paper over one summer just after he graduated from college. There's a handwritten listing of it at the computer history museum. It's pretty interesting and shows off how he programmed and thought about programming in 1960-1961. It's probably not terribly different from how other people programmed back then but he was better at it than most.

https://www.computerhistory.org/collections/catalog/10272457...