IE
I. E. S. Edwards
Iorwerth Eiddon Stephen Edwards, —known as I. E. S. Edwards—was an English Egyptologist and curator, considered to be a leading expert on the pyramids.
Excerpt from Wikipedia, available under CC BY-SA 4.0.
Books

The Cambridge Ancient History. Volume 1. Prolegomena and Prehistory. Part 1
1970
ISBN 9781139054249
The Cambridge Ancient History
1970
ISBN 9780521082303