CanLit Challenge discussion

I've been meaning to add some Pierre Berton to the CanLit Challenge list. I'm having a little trouble deciding whether to read his opus in the order it was written, or to read it (roughly) in the order of historical events.

The first book he wrote (as far as the bibliographies I've checked out) was the children's classic The Secret World of Og. The first one in historical order would be (I think) The Invasion of Canada: 1812-1813, the first of two on the War of 1812. Anyway, I'd love some feedback about which direction I should take, so I'm going to put up a poll.