Professor Muhammad Ilyas (Elias) Burney was a academic in British India whose interest spanned from economics to poetry. He was Professor for Economics at Osmania University Hyderabad.
More on him: https://en.wikipedia.org/wiki/Ilyas_Burney
“Burney is particularly known for his monumental work on the Ahmadiyya religion. His Urdu book. Qadiani Muzhab (Ahmadiyya Faith), is considered a comprehensive study on the subject”
Unfortunately this book is in Urdu only, but the merit of this Book is that its one of the most exhaustive (over 1000 pages) objective studies on the Ahmadiyya sect from an academic contemporary of that time of the Ahmadiyya Sect’s founding in early 1900’s.
This book is not written by a “mindless mullah”, but by a well educated highly respected academic of that time.
It deals from as wide ranging subjects such as the clothing style and family relations of the Ahmadiyya founder to the religious battles with Hindus and Christians and the controversies of the Ahmadiyya sect and the sects key figures. It also gives valuable references to the original sources in Ahmadiyya writings, which can be very valuable when researching the Ahmadiyya sect when trying to beat the Ahmadiyya with their own writings. This book therefore serves for the ahmadis as a valuable source to go back and censor their own writings and make any controversial source “disappear”. Therefore it is important that such a document is saved.
The full book is available as PDF: