First of a sorry for the late reply.
The reason why I’m reading An Economic History of the USSR is because a Marxist-Leninist friend recommended it to me. It has some nice information, but I would recommend Blackshirts & Reds by Michael Parenti if you want some more general information. He gives a far broader field of information about the Soviet Union and the rest of the communist bloc.
Mutual Aid: Building Solidarity During This Crisis (and the next) is indeed the one by Dean Spade. And yeah, it is a little too much focused on the US, but I would still recommend it.
Furthermore, I would really recommend reading Stasi State or Socialist Paradise. I just finished it and must say that it is one of the better books that I have read this year. It’s a light read but still contains so many great examples and information. It’s a great book for when you’re waiting for the train for example.