Feuergefahrlich - Rauchen Verboten! by Dan Mouritzsen http://docs.fdrlibrary.marist.edu/psf/box31/a296t02.html click on view next page at the bottom... estimates of the German oil situation.
Thanks Ray. The document page is a treasure trove of data. I need to spend some time with it. The photos are fascinating, as well. Good finds.