Just received this one a few days ago:
If any are unfamiliar with this series, it provides a brief individual airframe history for the aircraft types within the serial range (in this case K1000-K9999). This volume covers an diverse mix of types including as the Vildebeest, Wellesley, Hart, Hind, Audax, Fury, Bulldog, Heyford, Hector, Gauntlet, Gladiator, Blenheim, Spitfire, Shark, Wapiti, Whitley and several others. It's been OOP for some time so prices can be a bit spendy but I picked this up for what I believe was a reasonable price....and I'm really glad I did.
My one gripe is nothing to do with the book but with USPS. The vendor was in Fairfax, VA, and I live in Leesburg, VA, about 30 miles away...and yet delivery went via Greensboro, NC, Capitol Heights, MD and Washington DC before finally getting to Leesburg....and then another day to get it to me from there. Got to wonder at the logic of such a route.