diff --git a/doc/GoCourseDay1.pdf b/doc/GoCourseDay1.pdf
new file mode 100644
index 00000000000..daa99851b79
Binary files /dev/null and b/doc/GoCourseDay1.pdf differ
diff --git a/doc/GoCourseDay2.pdf b/doc/GoCourseDay2.pdf
new file mode 100644
index 00000000000..d05486e308b
Binary files /dev/null and b/doc/GoCourseDay2.pdf differ
diff --git a/doc/GoCourseDay3.pdf b/doc/GoCourseDay3.pdf
new file mode 100644
index 00000000000..91d723a6861
Binary files /dev/null and b/doc/GoCourseDay3.pdf differ
diff --git a/src/pkg/http/fs.go b/src/pkg/http/fs.go
index b56a101554b..312f65a7485 100644
--- a/src/pkg/http/fs.go
+++ b/src/pkg/http/fs.go
@@ -22,6 +22,7 @@ var contentByExt = map[string] string {
 	".html":	"text/html; charset=utf-8",
 	".jpg":	"image/jpeg",
 	".js":	"application/x-javascript",
+	".pdf":	"application/pdf",
 	".png":	"image/png",
 }