[AtlasLion]

It started selling way before digital photography, that could explain a lot of it.

[stevesearer]

Just found another article which describes other popular stock photos that continue to sell and most of them are older, pre-digital photos as well.

>The record for a single sale, he says, was about $35,000. “It still brings in some hefty money,” he says. [1]

[1] http://www.pdnonline.com/features/Stock-Photos-That-Ke-1294....

[AlbertoGP]

As a supplement to that article, here is a blog post linking to it that contains those pictures:

http://bintphotobooks.blogspot.de/2010/12/shelf-life-for-sto...