diff --git a/src/mcedit2/editorapp.py b/src/mcedit2/editorapp.py
index 62d6c72..2ac1743 100644
--- a/src/mcedit2/editorapp.py
+++ b/src/mcedit2/editorapp.py
@@ -152,6 +152,7 @@ class MCEditApp(QtGui.QApplication):
         mainWindow.addDockWidget(Qt.RightDockWidgetArea, self.libraryDockWidget)
         mainWindow.panelsToolBar.addAction(self.libraryDockWidget.toggleViewAction())
         self.libraryDockWidget.close()
+        self.sessionChanged.connect(self.libraryWidget.sessionDidChange)
 
         self.libraryWidget.doubleClicked.connect(self.libraryItemDoubleClicked)
 
diff --git a/src/mcedit2/library.py b/src/mcedit2/library.py
index fe1284e..d0ada71 100644
--- a/src/mcedit2/library.py
+++ b/src/mcedit2/library.py
@@ -5,41 +5,87 @@ from __future__ import absolute_import, division, print_function
 import logging
 import os
 from PySide import QtGui, QtCore
+from PySide.QtCore import Qt
+from mcedit2.panels.map import MapListModel
 from mcedit2.util.directories import getUserSchematicsDirectory
+from mcedit2.util.load_ui import load_ui
+from mcedit2.util.mimeformats import MimeFormats
 from mcedit2.widgets.layout import Column
+from mceditlib.util.lazyprop import weakrefprop
 
 log = logging.getLogger(__name__)
 
-class LibraryTreeModel(QtGui.QFileSystemModel):
+class LibraryMapListModel(MapListModel):
+    def flags(self, index):
+        return super(LibraryMapListModel, self).flags(index) | Qt.ItemIsDragEnabled
+
+    def mimeData(self, indices):
+        mimeData = QtCore.QMimeData()
+        mapItemData = ", ".join(str(index.data(self.MapIDRole)) for index in indices)
+        mimeData.setData(MimeFormats.MapItem,
+                         mapItemData)
+        return mimeData
+
+
+class LibrarySchematicsTreeModel(QtGui.QFileSystemModel):
     def columnCount(self, *args, **kwargs):
         return 1
 
+    def mimeData(self, indices):
+        mimeData = QtCore.QMimeData()
+        mimeData.setUrls([QtCore.QUrl.fromLocalFile(self.filePath(index)) for index in indices])
+        return mimeData
+
+    def mimeTypes(self, indices):
+        return ["text/uri-list"]
+
 class LibraryWidget(QtGui.QWidget):
+    editorSession = weakrefprop()
+
     def __init__(self):
         super(LibraryWidget, self).__init__()
+        load_ui("library.ui", baseinstance=self)
 
         self.folderPath = getUserSchematicsDirectory()
         if not os.path.exists(self.folderPath):
             os.makedirs(self.folderPath)
 
-        self.treeView = QtGui.QTreeView()
-        self.model = LibraryTreeModel()
-        self.model.setRootPath(self.folderPath)
-        self.treeView.setModel(self.model)
-        self.treeView.setRootIndex(self.model.index(self.folderPath))
+        self.schematicsModel = LibrarySchematicsTreeModel()
+        self.schematicsModel.setRootPath(self.folderPath)
+        self.schematicsTreeView.setModel(self.schematicsModel)
+        self.schematicsTreeView.setRootIndex(self.schematicsModel.index(self.folderPath))
 
-        self.treeView.doubleClicked.connect(self.itemDoubleClicked)
+        self.schematicsTreeView.doubleClicked.connect(self.itemDoubleClicked)
 
-        openLibraryButton = QtGui.QPushButton("Open Schematics Folder")
-        openLibraryButton.clicked.connect(self.openFolder)
+        self.mapListModel = None
+        self.editorSession = None
 
-        self.setLayout(Column(self.treeView, openLibraryButton))
+        self.openLibraryButton.clicked.connect(self.openFolder)
 
     def openFolder(self):
         QtGui.QDesktopServices.openUrl(QtCore.QUrl.fromLocalFile(self.folderPath))
 
     def itemDoubleClicked(self, index):
-        filename = self.model.filePath(index)
+        filename = self.schematicsModel.filePath(index)
         self.doubleClicked.emit(filename)
 
-    doubleClicked = QtCore.Signal(str)
+    doubleClicked = QtCore.Signal(unicode)
+
+    def sessionDidChange(self, session):
+        self.editorSession = session
+        if session is None:
+            self.mapListView.setModel(None)
+            self.mapListModel = None
+
+        else:
+            self.mapListModel = LibraryMapListModel(session)
+            self.mapListView.setModel(self.mapListModel)
+            session.revisionChanged.connect(self.revisionDidChange)
+
+    def revisionDidChange(self, revisionChanges):
+        # xxxx inspect revisionChanges! in fact, create AnvilRevisionChanges so
+        # we don't have to match `data/map_\d+.dat`!!
+        session = self.editorSession
+        if session:
+            self.mapListModel = LibraryMapListModel(session)
+            self.mapListView.setModel(self.mapListModel)
diff --git a/src/mcedit2/ui/library.ui b/src/mcedit2/ui/library.ui
new file mode 100644
index 0000000..0cb59d4
--- /dev/null
+++ b/src/mcedit2/ui/library.ui
@@ -0,0 +1,100 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Dialog</class>
+ <widget class="QDialog" name="Dialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>617</width>
+    <height>646</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Dialog</string>
+  </property>
+  <layout class="QHBoxLayout" name="horizontalLayout">
+   <item>
+    <widget class="QTabWidget" name="tabWidget">
+     <property name="currentIndex">
+      <number>1</number>
+     </property>
+     <widget class="QWidget" name="schematicsTab">
+      <attribute name="title">
+       <string>Schematics</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="verticalLayout">
+       <item>
+        <widget class="QTreeView" name="schematicsTreeView">
+         <property name="dragEnabled">
+          <bool>true</bool>
+         </property>
+         <property name="dragDropMode">
+          <enum>QAbstractItemView::DragOnly</enum>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <layout class="QHBoxLayout" name="horizontalLayout_2">
+         <item>
+          <spacer name="horizontalSpacer">
+           <property name="orientation">
+            <enum>Qt::Horizontal</enum>
+           </property>
+           <property name="sizeHint" stdset="0">
+            <size>
+             <width>40</width>
+             <height>20</height>
+            </size>
+           </property>
+          </spacer>
+         </item>
+         <item>
+          <widget class="QPushButton" name="openLibraryButton">
+           <property name="text">
+            <string>Open Schematics Folder</string>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="mapsTab">
+      <attribute name="title">
+       <string>Maps</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="verticalLayout_2">
+       <item>
+        <widget class="QListView" name="mapListView">
+         <property name="dragEnabled">
+          <bool>true</bool>
+         </property>
+         <property name="dragDropMode">
+          <enum>QAbstractItemView::DragOnly</enum>
+         </property>
+         <property name="movement">
+          <enum>QListView::Snap</enum>
+         </property>
+         <property name="resizeMode">
+          <enum>QListView::Adjust</enum>
+         </property>
+         <property name="viewMode">
+          <enum>QListView::IconMode</enum>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="customBlocksTab">
+      <attribute name="title">
+       <string>Custom Blocks</string>
+      </attribute>
+     </widget>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>