Reddit reviews Dangerous Language ― Esperanto and the Decline of Stalinism

There was a recent english translation that if enough people request might get an ebook: https://www.amazon.com/gp/product/1352000199/

Just go down to the product details and click on request this on kindle and they'll forward that on to the publisher who might eventually create an ebook for people to buy. As far as the Esperanto version you'll probably have to live with paper.