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I get the impression that you are focused on photo books........... I did pull the trigger (for now) on the Building the P-51 Mustang and Schiffer publishing's F-82 Twin Mustang books. Schiffer also has a couple of books on the early and late P-51s that look good.
P-51 Mustang, Vol. 1
The North American P-51 Mustang remains one of the most famous and recognizable aircraft in the world to this day. Nimble and fast—qualities that led the Mustang to be used even today in air races—the aircraft was forged in battle. The early Mustangs, often referred to as “Razorback Mustangs,”...schifferbooks.com
P-51 Mustang, Vol. 2
Even today, almost eighty years after its first flight, the North American P-51 Mustang remains one of the most famous and recognizable aircraft in the world. Nimble and fast, qualities that lead the Mustang to be used even today in air races, the aircraft was forged in battle. This, the second...schifferbooks.com
Again: not my choices, especially not in view of their prices.
I also included the early P-51D, and devoted background behind the XP-51 conception as well as a flight test comparison XP-51F vs P-51B, both at similar fuel fractions and 1650-3 engine.I get the impression that you are focused on photo books.
Those Schiffer books you mention are mainly photos, but not much text.
I have never seen it but I suspect that 'Building the P-51 Mustang' is also mainly photos with captions but not much other text, as I think this is a new version of his older book 'North American Aviation P-51 Mustang, From Production Line to Frontline' which I have seen.
Again: not my choices, especially not in view of their prices.
You can see a preview of the first book on Google Books and that did not impress me.
If you want photo books then the mentioned Schiffer books are good.
If you want design details then you should consider others.
If you want to understand the history, design and development of the P-51 then you should buy:
View attachment 718865 Amazon.com: P-51B Mustang: North American's Bastard Stepchild that Saved the Eighth Air Force eBook : Marshall, James William "Bill", Ford, Lowell F., Gruenhagen, Col (Ret.) Robert W.: Kindle Store
As the title says: it covers everything up to and including the P-51B.
For the P-51D/K you could consider the Valiant or MMP book mentioned above, or several others.
For the F-G-H-J versions: the Ginter book I posted above.
But that is based on my area of interest (design, development, technical details), which may not be yours.
I'm looking forward to itI also included the early P-51D, and devoted background behind the XP-51 conception as well as a flight test comparison XP-51F vs P-51B, both at similar fuel fractions and 1650-3 engine.
I'm working on the follow up through XP-82 and P-51H
It does have some details you can't find easily elsewhere, although it has been outstripped you'd probably need multiple other books to equal it.Going to have to get Mustang: The Story of the P-51. It may be older than I am by a decade, but it seems to have withstood the test of time.