Harold Biondo

National Defense Research Committee, War Metallurgy Division, OSRD No. 1963, Serial No. M-157 - Progress Report on Examination of Enemy Materiel - A Metallurgical Examination of a Track Link and Typical Bearings from German Tanks

CIOS Report XXXII-33 - Tank Development at the Daimler-Benz Factory Berlin-Marienfelde

CIOS Report XXIX-22 - History of German Tank Development

School of Tank Technology - Preliminary Report No.10 - Panzer I Ausf.B

FIAT Intelligence Report No. EF/AM/52 - Maschinenfabrik Augsburg-Nürnberg (M.A.N.)