Some of the endnotes inserted by Progress’s Stalinist editors in editions up to and including the last editions in the 1970s are fraught with polemics aimed at prejudicing the reader against this or that Bolshevik or revolutionary who, since Lenin’s death, had fallen out of favor with the current leadership of the USSR at the time the notes were inserted. Wherever possible, we have deleted, corrected, or toned down these polemics. In addition, we have added our own notes where appropriate, integrating them into the whole of the endnotes for each document.

Wow yeah that's pretty ridiculous. They claim to be archivists and yet they're clearly editors.