I have found each volume in the Workshop Practice Series (WPS) is full of info in a few pages:
#2 Vertical Milling in the workshop, Arnold Throp
#35 Milling: A Complete Course, Harold Hall
#37 Dividing, Harold Hall
#49 Milling for the Model Engineer, Stan Bray
Stan Bray & Harold Hall have published texts on milling outside the WPS umbrella but I
have not read them.