Coins of the Indo-Scythians, Sakas & Kushans - Cunningham, Alexander 1814-1893 (Indological Book House, 1971)
Reprinted from the Numismatic chronicle. 3. Ser. Vol. 8-10.12, 1888-1892
Pt. I. Introduction.--Pt. II. Sakas.--Pt. III. Kushans or Tochari