diff --git a/book.pdf b/book.pdf
new file mode 100644
index 0000000..b6c5f8c
Binary files /dev/null and b/book.pdf differ
diff --git a/icocayley.html b/icocayley.html
new file mode 100644
index 0000000..73b9901
--- /dev/null
+++ b/icocayley.html
@@ -0,0 +1,77035 @@
+
+
+
+
+
+
+
+Cayley diagram of the icosahedral group
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/icosahedron.html b/icosahedron.html
new file mode 100644
index 0000000..8971719
--- /dev/null
+++ b/icosahedron.html
@@ -0,0 +1,447 @@
+
+
+
+
+
+
+
+Icosahedron
+
+
+
+
+
+
+
+
+
+
+
+
+
+