-- It sounds like the 1991 Bronstein was professionally edited. But it wasn't typeset by the "traditional" method, which was essentially extinct by the mid-1970s, if not earlier. Photocomposition, even well edited, wasn't up to the metal standards. I don't even want to consider the "cold type" methods, which were essentially glorified typewriter output.
I actually have a few engineering textbooks, mostly mechanics and fluid dynamics, from the 1950s, if I can figure out which boxes they live in. Calculus too, but that's almost certainly using the "math" conventions. I'll try to start wi…