Good book on the history of programming languages?
There is an infrequently held conference series called History Of Programming Languages (HOPL). It was held in 1979, 1993, and 2007, the fourth installment is scheduled for middle of June, 2020.

The Proceedings for HOPL-I and HOPL-II were also published as books, for HOPL-III, both the papers and video recordings of the presentations are available. (Including the highly entertaining, though not necessarily highly scientific 50 in 50 by Guy Steele and Dick Gabriel, presenting 50 language-related ideas from 50 years in 50 words each within (a little bit more than) 50 minutes.)

There is also a website called Online Historical Encyclopaedia of Programming Languages, which collects about 9000 languages and presents them in the form of a hypergraph with several kinds of relationships (evolution-of, influence, dialect, …, also people involved, regions where it was developed, institutions, etc.) between them.