I know these illustrations since mid-80's, where largely published in specialized magazines as "Volare" and "Aerospazio Mese".
The drawings addresses (more or less correctly) the Zenit, Energia and Vulkan (a sort of super-Energia envisioned by Glushko) launchers, even if the artwork is really closer to the actual Energia.
The "Reusable space plane in development" reflects exactly what I've pointed out in my previous post, U.S. Intelligence Analysits were misleaded by the Bor-4, they thought about a really small subscale test article (like X-23 Prime) as forerunner to a larger spaceplane (4 cosmonauts) in the same class of Hermes.
Obviously such project never existed, but its mythology persisted giving birth to the the urban legend of the dubbed "Uragan spaceplane".