Back in the day I think I've read just about everything Gann and Bach have written. Guy Murchie's book Song of the Sky, is another old classic that gets overlooked sometimes. There is a more recent arrival however that should be on everyones' list - Robert Buck's - North Star Over my Shoulder. Anyone who has been flying for any length of time has read Buck's classic Weather Flying. Since it was first published in 1970 it's become required reading for anyone interested in understanding the environment within which we fly. His most recent (and final) book, North Star Over my Shoulder . . . is just an incredible read. He passed away not long ago at 93 and I'm so glad he gifted the world with this account of his amazing life which started off with a bang. 17 years old, 1930, breaking the transcontinental speed record from New Jersey to Los Angeles in a Pitcairn Mailwing. Think of it . . . 1930 . . . very few airports, no navigation aids, nothing but needle, ball and airspeed to stay right side up in weather or at night with no horizon. All he and others had back then was instinct and luck. To top things off, on his way back to New Jersey he beat the existing record flying west to east. His writing style is a joy to read, as anyone who has read his other books can attest to. This last book of his is not to be missed.
Another extremely well written memoir by another amazing pilot is Beryl Markham's West With the Night. She was the first person to fly solo from east to west across the Atlantic, 1936.
What a life these folks had.