Al-Madkhal ila Madhhab al-Imam Ahmad ibn Hanbal - Ibn Badran

An excellent book, well known, which is an introduction to the study of Madhhab Imam Ahmad: the Imam, the history of the school, its foundations, its particularities, the great imams and books etc ...

A must for every Hanbali student.

Very nice edition authenticated and annotated by Abdallah at-Tourki.