Credit-1: special thanks to colleague Bernt Wahl for digitizing these for us!
Credit-2: vielen dank to Michael Friedewald and the students in the Computer History Course at the Technical University Aachen, Germany, Department for History of Technology for scanning these in, putting them up on the web, and making them available to us!
Credit-3:
thank you long time comrad Bill Daul for making this available!