The claim that Fortran and assembly languages "trace to" Algol is... odd. Fortran I was released in 1957; the first fragmentary spec for Algol wasn't released until 1958 (with Fortran project leader John Backus as one of the primary contributors). And there were also recognizable assemblers, in the modern sense, at the time (although terms like that weren't always used with their modern meanings in the 1950s, which lays up all sorts of traps for the unwary).