diff --git a/README.md b/README.md
index 31edc9a..d7ffc4a 100644
--- a/README.md
+++ b/README.md
@@ -292,6 +292,7 @@ A curated list of awesome mathematics resources.
 
 ### Topology
 
+* [Elementary Applied Toplogy](https://www.math.upenn.edu/~ghrist/notes.html) - Robert Ghrist (UPenn)
 * [Introduction to Topology](http://www.math.colostate.edu/~renzo/teaching/Topology10/Notes.pdf)
 * [Introduction to Topology](http://www.math.bme.hu/~kalex/Teaching/Spring10/Topology/TopNotes_Spring10.pdf) - Alex Küronya
 * [Introductory Topology](http://www.math.clemson.edu/~jimlb/Teaching/2009-10/Math986/Topology.pdf) - Jim L. Brown