Off the back of the recent spacesuit twitterstorm, I discovered Mary Robinette Kowal's Lady Astronaut series. I've just finished The Calculating Stars, and once you look past some distinctly 21st century attitudes by the main character, it's a pleasingly well-researched and optimistic 'punchcardpunk' alternate history[1] of space exploration.
If you liked Hidden Figures (which was published after this was written), you'll probably enjoy this.
[1] The plot device is that NACA give Von Braun's team resources to develop space flight immediately after the war, and then a natural disaster in 1952 (just after they've achieved artificial satellites) kills off much of our original timeline and makes colonisation of space within decades imperative for the survival of humanity.