John Ross - Shakespeare's tremor and Orwell's cough

John Ross is US medical doctor with literary interests. In this book he describes number of kind of case histories of literary greats.

( Life and especially Death of authors in English )

Niall Ferguson - Virtual History

Niall Ferguson is an American historian.

These are not stories placed in worlds of alternate history but scholarly essays about possibilities.

( Counterfactuals of more serious kind )

Heather Pringle - The Master Plan; Himmler's Scholars and the Holocaust

This is the story of Ahnenerbe nazi organization that tried to prove the existence of Aryans and rebuild the (nonexistent) Aryan world. In popular culture Ahnenerber has been turned into a nazi mad scientist or occultist organization, due to Himmler's interest to occult and his occult oriented castles.
( Delusions of scholarship )