diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index 7390c82..6e2f2d3 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -1,3 +1,7 @@
 # Summary
 
-- [Chapter 1](./chapter_1.md)
+[Introduction](README.md)
+
+- [Unit 1: A Quick Romp Through the 17th Century](u1/README.md)
+
+
diff --git a/src/chapter_1.md b/src/chapter_1.md
deleted file mode 100644
index b743fda..0000000
--- a/src/chapter_1.md
+++ /dev/null
@@ -1 +0,0 @@
-# Chapter 1