I realized that all of my other hobbies - cooking, biking, photography, brewing, have plenty of books written about them, and I in turn have many of them. Listening to my stereo system is probably the hobby I spend the most time with yet have absolutely no books on the subject. So I ask of you, what are the essential books? 
I will l note I’m more interested in the “how to listen” flavor versus the super super technical end of things. Ideally it would be a nice mix of both, how a and b leads to this, and how c and d leads to that and later on I could get more into the engineering side. Also would be interested in historical context reads. Lastly I would like recommendations that are actually published in book form. Look forward to your responses.  Thanks all! 
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A little update. A few days ago, I received the 6th edition of Robert Harleys' Audio book. The reason that I prefer it is that new subjects are brought to light because of the passage of time and the advancing technology. It also includes definitions of audiophile terms that would help the newcomer. There is even more, BUT  the cover is not as stupid looking as it once was. The copy that I got was slightly used and nearly perfect. $36ppd.

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Sorry to bust up the party, but I have been reading books on physics, electricity, boilers and reducing crude oil. All from a 1936 set of thin books apparently intended to educate the common worker. The examples used were about horses, straw, and other common things of the time. 

 The interesting part to me is how much of it still relates to present day audio. For example, the conductivity of various metals. According to the physics 'manual', silver is number1, followed by gold, then copper, IIRC. Then as far as metals being used for their heatsinking qualities, it goes away from what we think of to such metals as bitumen, lead, and sorry I don't remember the others. It's storming outside and the books are in my truck. Funny thing, aluminum isn't even mentioned as a heat sinking metal!  They talk about cast iron (lousy heat sink) and brass, and few others. Suppose it all related to what they were using at the petroleum plant.