As I blog this, Koontz is listed as having written 106 books, in case you’re counting. That’s a lot. And in the early years he really cranked them out under a variety of pseudonyms. The Dwyer name he used twice, as both Deanna and K.R.
Dragonfly is typical of Random House in the mid 70’s, octavo, black cloth backstrap and yellow paper boards. The standard Random House first edition indicators are present, a number line ending in ‘2’ with the First Edition slug. The jacket is also pretty typical, not particularly fragile. The front illustration is so 70’s it’s almost a cliche.