My grandfather was a gunner in the pacific theatre during WWII and then worked on an assembly line after an injury to his inner ear until he was ho arbor discharged. He was often too sick for me to spend time with him, and he died when I was 10. After my grandmother died, I came across this photo book, but have no one to ask (I'm not close to my dad and his family, and if I let them know I had this, they'd want it. If I knew they'd take care of this, I might consider letting them have it, but none of them will). I was wondering if anyone might know anything about the photos or why he would have them. They're obviously not originals, but I've never seen anything like this.
It looks like a unit memento album from the end of the war. Some units had them; my uncle's did, although it may be from a reunion or another later event too. The 38th operated medium bombers and struck targets on land or in land-based naval support (B-25s and B-26s). As for further specifics (and for people who would be very interested in its history!) you can contact the 38th Bombardment Group Association via its website. They've recently published a bigger historical album and narrative. I presume your grandfather was part of one of the squadrons of the 38th?