I was looking some Rand's book on a Brazilian bookstore site (Saraiva) and saw this artwork (04/23 is the world book day). I have seen this kind of art everywhere for the last years. It is a pretty nice idea of mixing words and shapes to create an image, in this case a world map. As we can see, the idea is using different writers' name for each country and shape it.
When I saw this advertisement I immediately thought about the poster by Greg Baeuchamp, who made the United States heart map and because that I assume this is a contemporary design.