[lambada]

The post is from 2011, so i would expect them to have entered much wider circulation now.

[larsga]

These illustrations were used in the first edition in 1937. My edition is from 1992. I don't think frequency of use has changed at all.

[lambada]

In that case I guess that the images in the article aren't the 'never before seen' (in 2011) ones that are meant to have been included in the publicised book.