Request for information on T-26A T&E

I’m looking for T&E information on Soviet T-26 Assault Guns for 1940 time frame. How many were made and how many were in a company or battery. I am trying to build a historical force of T-26 tanks and variants for operation Barbarossa.
I did pick up a couple of books by Charles C Sharp one of them is called Red Hammers Self Propelled Artillery and Lend Lease Armor 1941-1945 which lists many of the T-26 variants from the 1930s and how many were made down to the number being 1 for testing/developement but it doesn’t even list the T-26A or T-26-4.
According to another reference there were “a few” T-26-4’s made and another states the T-26A was the most famous of the pre-war assault tanks.
I have seen references to a book called the “Red Army Handbook 1939-1945” by Steven J Zaloga but it is out of print and I have it back ordered from Amazon.
Has anyone got a copy of the Red Army Handbook that can see if these questions are answered in it for me? Or have you another source that has this information?
Thanks
Steve