diff --git a/README.md b/README.md
index fbc137b..e2a0bbd 100644
--- a/README.md
+++ b/README.md
@@ -4,10 +4,6 @@ A [quadtree](https://en.wikipedia.org/wiki/Quadtree) recursively partitions two-
 
 <a href="http://bl.ocks.org/mbostock/9078690"><img src="http://bl.ocks.org/mbostock/raw/9078690/thumbnail.png" width="202"></a>
 <a href="http://bl.ocks.org/mbostock/4343214"><img src="http://bl.ocks.org/mbostock/raw/4343214/thumbnail.png" width="202"></a>
-<a href="http://bl.ocks.org/mbostock/6216724"><img src="http://bl.ocks.org/mbostock/raw/6216724/thumbnail.png" width="202"></a>
-<a href="http://bl.ocks.org/mbostock/6224050"><img src="http://bl.ocks.org/mbostock/raw/6224050/thumbnail.png" width="202"></a>
-<a href="http://bl.ocks.org/patricksurry/6478178"><img src="http://bl.ocks.org/patricksurry/raw/6478178/thumbnail.png" width="202"></a>
-<a href="http://bl.ocks.org/llb4ll/8709363"><img src="http://bl.ocks.org/llb4ll/raw/8709363/thumbnail.png" width="202"></a>
 
 ## Installing