Swamped

Well, you decide to start by at least seeing what's in this package. Then you might be able to figure out what to do with it.

It takes a little work to open, but it's not too hard. You reach in and pull out the contents.

It's... a sketchbook? Flipping through it, you mostly see a number of people in noble clothes. One of them has a crown, must be a king or something. There's a few soldiers, too...

Wait. Here's someone who looks like Captain Long, though a bit younger. Here's another one who looks like Mudviper. And this picture has "Captain Long" shaking hands with a man who looks distinctly like your father.

You don't see Henry in any of these, though. But towards the end you find an incomplete sketch of a face. It seems awkwardly done, much worse than any of the other pictures. Maybe it's a self-portrait, and the artist had trouble working with a mirror?

The very last page has another sketch of the king, holding an infant. He isn't wearing a crown in this picture, but he appears often enough that you're pretty sure it's him.

There are some notes, but you can't read any of them. Maybe they're in Kandrian or something.

You're not sure what to make of this. Should you show someone else? And if so, who?