diff --git a/LICENSE.md b/LICENSE.md
index a631f2a..f1d6acf 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -28,6 +28,10 @@ For printed and static maps a similar attribution should be made in a textual de
OSM Liberty is using the [Maki POI icon set](https://github.com/mapbox/maki/blob/master/LICENSE.txt) which is licensed under CC0 1.0 Universal.
+U.S. Interstate shields come from [Wikipedia][wikipedia_us_interstate] and are in the public domain.
+
+[wikipedia_us_interstate]: https://commons.m.wikimedia.org/wiki/Category:Interstate_Highway_shield_blanks
+
## Fonts
OSM Liberty is using the Roboto font family (Copyright 2011 Google).
diff --git a/svgs/svgs_not_in_iconset/us-interstate_2.svg b/svgs/svgs_not_in_iconset/us-interstate_2.svg
new file mode 100644
index 0000000..17db9f0
--- /dev/null
+++ b/svgs/svgs_not_in_iconset/us-interstate_2.svg
@@ -0,0 +1,90 @@
+
+
+
\ No newline at end of file
diff --git a/svgs/svgs_not_in_iconset/us-interstate_3.svg b/svgs/svgs_not_in_iconset/us-interstate_3.svg
new file mode 100644
index 0000000..6a5e729
--- /dev/null
+++ b/svgs/svgs_not_in_iconset/us-interstate_3.svg
@@ -0,0 +1,91 @@
+
+
+
\ No newline at end of file