JF Ptak Science Books
The Nazi propaganda office published this effort (printed in August 1940) with every intent of making it seem as though it was produced in the U.K. as a sober reconsideration of fighting against the Germans, casting much of the argument in terms of economics. It was a relatively soft-sell effort in a hearts-and-minds campaign, hitting its target audience with reminders of how alone everyone on the British Isles were in the hard summer of 1940.
These two maps compare the economic and trade situation of 1914 and 1939, from the Nazi perspective. In 1914, the British, "as a preliminary condition for the success of the hunger-Blockade, only achieved, however after four years if struggle during which Britain was to sustain heavy losses". They announce with exclamation (!) that for 1939 there was:
"a totally different situation! The encirclement of Germany miscarries, leaving way for the expansion of Germany, and the way for her trade with neutral countries, especially with the Balkans and Russia...thus is the blockade against Germany a hopeless enterprise".
The Nazis' state that "Britain...energetically refuses to admit the hopelessness of her winning this trade war and tenaciously grasps upon all kinds of unfounded rumours...", all the while refusing to discus the bombing of Britain or any other aspect of military war
After a dozen pages of making the case against the British position in being able to take care of itself, there is this folding quantitative display, making a diametrical-pictorial presentation of the British failings. The Nazis show that they overpower the British in the ability to supply itself with grain, flour, meat, cooking fat, cheese, eggs, sugar and vegetables--in every area, in fact, except for fish.
This is the summation of the pamphlet, the last paragraph, asking the Brits to just give it up and quit their fight.