As I am getting ready to my lecture about the history of the French language this Sunday, I come across this wonderful book systematizing the development of the French language from Late Latin / Vulgar Latin to the present day.
English title: N. Katagośina, N. Vasiljeva “History of the French Language”
Original title (Russian): Н. Катагощина, Н. Васильева “История французского языка”
First published in the Levinarium Telegram Channel (now closed and deleted)