Usd ul-Ghabah fi Ma'rifah as-Sahabah - Ibn Athir (7700 biographies)

Enormous collection of biographies of the Imam historian and Muhaddith 'Izz ad-Din Ibn al-Athir (630H) listing more than 7,700 Companions of the Prophet sallallaahu alaihi wa sallam, in alphabetical order. Biographies of varying length according to the degree of Sahaba mentioned (Example 18 pages of biography for Umar ibn al-Khattab).

Very beautiful edition in a single very large volume of more than 1600 pages.