Harold Biondo

ETO Ordnance Technical Intelligence Report No. 340 - 21 cm. Rö Gr. 44 Be. - 21 cm. Anti-Concrete Projectile

CIOS Evaluation Report 163c - Interrogation of Saur, Head of Technical Department in the Speer Ministry

FIAT Report 53 on Albert Speer - Organization and Technical Aspects of German Developments in Armaments

Supplementary Report of Visit to Proving Grounds