The flyleaf of this book starts out by saying that the book was the result of thousands of letters that the author received. He says, “Some of these letters have been from young men … the rocket engineers of tomorrow.” In 1957 it was inconceivable, I’m sure, that a woman would become a rocket engineer. The author talks to the “fellows” who wrote him letters and uses the pronoun “he” and “him” throughout the book. Reason #1 to weed it.
Also, it is a bit technical. It explains how rockets work and how they are tested. I’ll bet that’s a bit more complicated nowadays than this book indicates! Reason #2 to weed this: it’s waaaay out of date. This is twelve years before we ever went to the moon!