I'm currently working on a paper focusing on the September Campaign of 1939. I'm really trying to focus on how the Poles were portrayed by journalists, photographers, generals and historians as completely incompetent and backwards equipment wise compared to Germany. I also am trying to address the falsehood of the German Army being completely mechanized/motorized which was spread by the press. I have tons of secondary sources but what I'm really lacking is primary. Does anyone know of any good primary sources that they could recommend. I'm really interested in finding any photo albums of the Polish Army or anything written by an actual participant on the Polish side. Sadly I can't read Polish so that does limit what I can use.