Good day to you all, As a communist I've always been interested in Soviet history but my problem with it is that I don't usually know what sources to trust, this usually includes both right and left wing historians,
Like how Grover Furr completely ignored the soviet archive that stated that the katyn massacre happened, I'm also highly suspicious of some right historians as well who use things such as the black book of communism, the gulag archipelago or rumors as sources.
So in any case I was wondering if you guys (who I have a really high opinion of) could give me some examples of objective historians using the soviet archives as sources.
Thank you for your time.
There will be more to say here, but the AH booklist contains recommendations that will be of use to you. I'd add the small caution that there's really no such thing as "objective" history, in the sense of something that's generally accepted to be true – certainly not least in a field like this one. Just interpretation that is more rather than less judicious and more rather than less solidly based on a variety of archival sources.
With that said, the books recommended via this link are all archivally-based and all have solid reputations. The list incorporates brief discussion of their focuses. I hope it helps.
Most any current historian with a focus on the Soviet Union will have spent time in either the State Archive of the Russian Federation (usually known by its Russian acronym, GARF), or similar archives either in Moscow or in post-Soviet capitals. If they have not noted that in their work, then I would be cautious of what they are saying, as it suggests they have not looked at primary sources or documents.
In regard to actual research on the topic, I can suggest a couple titles to look at:
"Archival Research in the USSR: A Practical Guide for Historians" by Lynn Viola, a chapter in A Researcher's Guide to Sources on Soviet Social History in the 1930s edited by Sheila Fitzpatrick and Lynn Viola (1990). While a dated work it shows the early stages of archival research, and both Fitzpatrick and Viola are some of the most prominent names in terms of Stalin-era Soviet history. It is currently (partially) available via Google Books as well.
"Researching Nationality Policy in the Archives" by Peter A. Blitstein, Cahiers du Monde russe Vol. 40, No. 1/2 (Jan-Jun. 1999), pp. 125-137. As the name suggests, Blitstein looks at going through the archives specifically for nationality-related topics. This journal edition was a special issue on "Assessing the New Soviet Archival Sources" so you may want to look at other articles in there as well (I have the Blitstein article available though, and will be happy to share).
I would also suggest Red Flag Unfurled: History, Historians, and the Russian Revolution by Ronald Grigor Suny (2017). It is a look at the historiography of the Soviet Union, showing how historians have covered it from 1917 to 2017. While it mostly focuses on published works, and most of them are from the Soviet era (when archival access was restricted), if you look at some of the authors and titles within you can get an idea of who to further look at in terms of Soviet history.