Looking for a comic hardback book about an alien ship crashed on earth and a giant humanoid pilot

Question

When I was about 10 I read a great comic hardback. the story based around the discovery on earth of a crashed alien ship, with a giant human pilot. I clearly remember a scene where the giant humanoid was on display and scientists on earth were discussing his biology.

There was also a book which needed to be translated and when one of the scientists finally managed to do it, it told the story of three brothers who formed a great city but ultimately fought each other. The strip had a 1930 to 40s feel and it may have been European, I would love to be able to read it again.

Answer 1

Could this be "The Rise and Fall of the Trigan Empire", AKA "The Trigan Empire"?

Per wikipedia;

The first strip told of a spaceship crashing into a swamp on Earth, the crew frozen to death, with many written volumes inside in an unknown language. Studies of the crew reveal them to be humanoid, but around 12 feet tall. After many years, the spaceship is turned into the central attraction of an amusement park. Eventually, at a very advanced age, a scientist—Peter Richard Haddon—who had studied the books from the spaceship as a young man manages to decrypt the volumes, and begins to relate the tales.