What I mean you are unable to read Polish. If you are able you should do your own research.
Okay, then I apologize. I misunderstood what you were saying.
Polish sources are increasingly available in English though, and have often been translated into German as well. So oftentimes you don't need Polish anymore to compare how versions of history differ from country from country. "Poles are most objective in their dealing with history" is only true in my eyes if you mean Poles talking about the Polish version of history. You could say the same about the Germans dealing with their version of history, or the Brits dealing with theirs. There are always different points of view when it comes to certain historic events, and the Polish one is no better or more objective than any others'.