diff --git a/pixelocr/gui/glyphdbedit.py b/pixelocr/gui/glyphdbedit.py
index 7dbf45f..60d612b 100644
--- a/pixelocr/gui/glyphdbedit.py
+++ b/pixelocr/gui/glyphdbedit.py
@@ -34,7 +34,8 @@ from ..image import Image
 
 class Column(object):
     flags = Qt.ItemIsEditable
-    data_type = str
+    to_display = str
+    to_value = str
 
     def __init__(self, header, field_name, image_field_name=None):
         self.header = header
@@ -43,25 +44,29 @@ class Column(object):
 
     def data(self, glyph_data, role):
         if role in [Qt.DisplayRole, Qt.EditRole]:
-            return self.data_type(getattr(glyph_data, self.field_name))
+            return self.to_display(getattr(glyph_data, self.field_name))
         elif role == Qt.DecorationRole and self.image_field_name:
             return getattr(glyph_data, self.image_field_name).qimage
 
     def setData(self, glyph_data, value, role):
         if role == Qt.EditRole:
-            setattr(glyph_data, self.field_name, self.data_type(value))
+            setattr(glyph_data, self.field_name, self.to_value(value))
 
     def sortKey(self, glyph_data):
         return getattr(glyph_data, self.field_name)
 
 
 class IntColumn(Column):
-    data_type = int
+    to_display = int
+    to_value = int
+
+
+class DateColumn(Column):
+    flags = 0
 
 
 class CheckBoxColumn(Column):
     flags = Qt.ItemIsUserCheckable
-    data_type = bool
 
     def data(self, glyph_data, role):
         if role == Qt.CheckStateRole:
@@ -79,13 +84,14 @@ class GlyphDBModel(QAbstractTableModel):
         IntColumn('Elevation', 'elevation'),
         CheckBoxColumn('Bold', 'bold'),
         CheckBoxColumn('Italic', 'italic'),
+        DateColumn('Date added', 'date_added'),
     ]
 
     def __init__(self, glyphdb, parent=None):
         super().__init__(parent)
         self.glyphdb = glyphdb
-        self.sortKey = None
-        self.reverse = None
+        self.sortColumn = len(self.COLUMNS) - 1  # date_add ed
+        self.sortOrder = Qt.DescendingOrder
         self.updateData()
 
     def flags(self, index):
@@ -128,18 +134,15 @@ class GlyphDBModel(QAbstractTableModel):
         return True
 
     def sort(self, column_index, order):
-        column = self.COLUMNS[column_index]
-        self.sortKey = column.sortKey
-        self.reverse = (order == Qt.DescendingOrder)
+        self.sortColumn = column_index
+        self.sortOrder = order
         self.updateData()
 
     def updateData(self):
         self.layoutAboutToBeChanged.emit()
-        if self.sortKey is None:
-            self.values = list(self.glyphdb.values())
-            self.values.reverse()
-        else:
-            self.values = sorted(self.glyphdb.values(), key=self.sortKey, reverse=self.reverse)
+        column = self.COLUMNS[self.sortColumn]
+        reverse = self.sortOrder == Qt.DescendingOrder
+        self.values = sorted(self.glyphdb.values(), key=column.sortKey, reverse=reverse)
         self.layoutChanged.emit()
 
 
@@ -160,6 +163,7 @@ class GlyphDBEdit(GlyphTableView):
     def __init__(self, glyphdb, *args, **kwargs):
         super().__init__(*args, **kwargs)
         model = GlyphDBModel(glyphdb, parent=self)
+        self.horizontalHeader().setSortIndicator(model.sortColumn, model.sortOrder)
         self.setModel(model)
 
     def sizeHint(self):