diff -r feb0d3e0fef9 -r f99435a7006e server/src/app/Http/Controllers/Api/DateStatsController.php
--- a/server/src/app/Http/Controllers/Api/DateStatsController.php	Tue Nov 15 17:42:57 2016 +0100
+++ b/server/src/app/Http/Controllers/Api/DateStatsController.php	Tue Nov 15 18:25:35 2016 +0100
@@ -93,7 +93,7 @@
         $datestats = [];
 
         $max = intval($esRes['aggregations']['datestats']['maxyear']['value']);
-        $min = intval($esRes['aggregations']['datestats']['maxyear']['value']);
+        $min = intval($esRes['aggregations']['datestats']['minyear']['value']);
 
         return response()->json(['dateminmax' => [ $min, $max ] ]);
     }