The first blue-cloth hardcover is Wings of World War II by R.J. Huff. It is a classic example of mid-20th-century aviation nostalgia publishing — the kind of book that often shows up in estate collections of pilots, modelers, and WWII aviation buffs. The second is World War One Collector’s Handbook, Volumes 1 & 2 by Paul J. Schulz, Hayes Otoupalik, and Dennis Gordon — is a well-known reference guide for WWI militaria collectors. And the third is The Outlaw Gunner by Harry M. Walsh is a classic in the world of American waterfowling history, especially for anyone fascinated by the era of big-market gunning and the culture that surrounded it. All in good condition.