Tonight after rereading John Backus’s 1981 “History of Fortran I, II, and III” * paper and recalling the discussion between Dick Sites and Len Shustek regarding the Fortran documentation Dick had seen in the 1960s, I decided to start asking people specifically about the ‘Tome’ as well as, more generally, “the source code” (which might be in the form of an assembly listing, magnetic tape, or even punched cards).
* See https://dl.acm.org/doi/10.1145/800025.1198345.
Update 2024/05/07: Added footnote.