Hi! I'm Mike Jenne. I wrote a trilogy of plausible history books (the "Blue Gemini" series) that follows several characters, on both sides of the Iron Curtain, who are involved in secret military manned space programs during the Cold War era. I have a website for the series at
www.mikejennebooks.com . It contains a fairly extensive reference library of documents pertinent to that era, as well as a collection of technical illustrations that depict technology unique to the series. These illustrations were prepared in the style of that era by my brother Ed Jenne, a former tech illustrator for NASA's Marshall Space Flight Center. Most of the references and all of the drawings are freely available to download as PDFs. Some examples are attached. All the best to everyone!