As Scandinavian, the Golden Age of illustration wouldn't be dealt with without mentioning John Bauer. He was drowned in a boat accident, but his legacy lives strong up here in North. He's well worth mentioning and as worthy to be emulated as Rackham and Dulac :-)
The Nordic spruce forests indeed are like a heavy, dark walls...
John Bauer at artpassions
John Bauer at Illustrators