First up, That's England! World Domination through Blood and Gold by Fritz Reipert, published either 1939 or 1940. It's only forty pages long, cheaply bound and priced at 40 Reichsmarks*. The cover alone puts it firmly in the categories 'popular' and 'subjective'.
Index: (Bear in mind that German employs exclamation marks far more liberally than English. The author also uses 'Britain' and 'England' interchangeably.)
1. England - same as ever!
2. The bloodstained path to a British Empire
3. The sanctity of contracts - as England sees it!
4. England in the stocks!
5. British conduct during the World War
6. Versailles: new edition - England's dream!
7. German peacekeeping - English warmongering
8. England is to blame for the war!
9. England's blood-guilt in Poland
10. Lies and horror stories - England's weapons!
11. Abuses of neutrality - the prerogative of British warfare
12. England's last resort - hunger blockade!
13. England's big mistake!
*Trying to figure out what that is in today's money, or any other meaningful comparison has me beaten so far. I'm still working on it.