Wonderful point. This is truly a shame. So many of the flight engineers were around in the earliest days of the Soviet space travel working as engineers for Korolev (perhaps not directly, but those that were around then all have somewhat personal stories about interactions with Korolev). As they pass away, that wonderful and colourful history both from their early days as engineers and later on as cosmonauts is lost. It's a shame that more of it hasn't been published in english (or a shame for me, at least, for not speaking Russian!). A very interesting group.