Some documents contain interesting information all on their own, some raise more questions than give answers. Then there's something like this.
"Intelligence Department of the Western Front
November 19th, 1942
To the Military Censor of the 33rd Army
Activist's notepad #7.
It is forbidden to cite, publish, refer to, etc. the article titled "The Germans cut prisoners and drink their blood".
Red Army Military Censorship Telegram #13861
Military Censor, Major Lavrentyev."