[PJ-Comix]

Check the BPL. I read a book from there by his nephew.... about Lazar Kaganovich.

I'm ahead of you. I read that very same book, "The Wolf of The Kremlin," already. I sped read it (my mom used to teach Evelyn Wood speed reading course) at a remainder bin in a bookstore. If I remember now his nephew's name was Kahan but it is not impossible that other relatives here use the name Kagan.

[dennisw]

That's the book!