diff --git a/src/components/LeafletMap.js b/src/components/LeafletMap.js
index 7c47363fe0214111f78c06118a9e909afd453b28..454f6b443d2593fbc7a31736b3958ede22a00926 100644
--- a/src/components/LeafletMap.js
+++ b/src/components/LeafletMap.js
@@ -78,6 +78,13 @@ class LeafletMap extends React.Component {
               opacity={this.state.opacity}
             />
           </LayersControl.Overlay>
+          <LayersControl.Overlay name="Senate atlas">
+            <TileLayer
+              attribution="SeCo"
+              url="http:///mapwarper.onki.fi/mosaics/tile/5/{z}/{x}/{y}.png"
+              opacity={this.state.opacity}
+            />
+          </LayersControl.Overlay>
           <LayersControl.Overlay name="Western Front July 1917">
             <TileLayer
               attribution="SeCo"