I have a couple of books that are dated 1940 and 1945.
The first one is The Anatomy Physiology & Natural History of the Honey Bee by W. Herrod-Hempsall in this publication there are pictures taken of the internal organs of the Honey Bee, which in those days it was something out of the ordinary to see photos of the internal organs. A lot of what is written has been superseded but its easy to see how they came to certain conclusions.
This publication has been signed by W. H-H. FRES
The next book is ABC & XYZ of Bee Culture the A.I. Root Library.
Again with the older books there is a lot of out of date stuff, but in general what they were saying in those days gone by, still holds true today. Very USA orientated but full of good information.
Regards;