HAEFELY / PD Line History.pptx
Date printed in deck: 02.11.2020
Supplied as original project source by the user; preserved under Library name PD Line History.pptx
Historical illustration excerpts: image32.png slide 10 (TE 560); image31.png slide 9 (TE 571); image26.png slide 3 (DDX series).
Image rightsholder/photographers not specified in deck. Contextual source attribution; external editorial legal clearance not certified.