Rats, Lice and History - Hans Zinsser - Google Books

https://books.google.de/books?id=crD-P3fJ4NQC&pg=PA101#v=onepage

When Rats, Lice and History appeared in 1935, Hans Zinsser was a highly regarded Harvard biologist who had never written about historical events. Although he had published under a pseudonym, virtually all of his previous writings had dealt with infections…