diff --git a/CollectionClass.inc b/CollectionClass.inc
index b027ac4c..9cebc3ce 100644
--- a/CollectionClass.inc
+++ b/CollectionClass.inc
@@ -678,7 +678,12 @@ class CollectionClass {
    * 
    * @param $sparql_results array
    *   The array of results as yielded by ObjectHelper::parseSparqlResults()
-   *   (and those associated functions which make use of it)
+   *   (and those associated functions which make use of it).
+   *   Each result must contain:
+   *    - 'object': The PID/URI of the child object.
+   *    - 'title': A title for the child object.
+   *   and may contain:
+   *    - 'thumbnail': URI to a datastream. (will default to the 'TN' stream on the child)
    * @return
    *   An array to be passed to drupal_render, containing a pager, an unordered
    *   list of items, and another pager.
@@ -695,11 +700,22 @@ class CollectionClass {
       $title = $result['title'];
       $truncated_title = truncate_utf8($title, $max_title_length, TRUE, TRUE, 5);
       $obj_path = "fedora/repository/{$result['object']}";
+      
+      //Get a thumbnail
       $tn_path = ($result['thumbnail'] ?
         "fedora/repository/{$result['thumbnail']}":
         "$obj_path/TN");
-      
-      $thumbnail = theme('image', $tn_path, $truncated_title, $title, array(), FALSE);
+      
+      $thumbnail = NULL;
+      if ($thumbnail === NULL &&
+          module_exists('imagecache_external') &&
+          is_callable('theme_imagecache_external_image') &&
+          variable_get('fedora_repository_use_imagecache_external_in_collection_view', FALSE)) {
+        $thumbnail = theme('imagecache_external_image', 'fedora_repository_collection_thumbnail', $tn_path, $truncated_title, $title);
+      }
+      if ($thumbnail === NULL) {
+        $thumbnail = theme('image', $tn_path, $truncated_title, $title, array(), FALSE);
+      }
       
       $results[] = array(
           'data' => l($thumbnail, $obj_path, array(
diff --git a/fedora_repository.module b/fedora_repository.module
index 7235aa36..67397716 100644
--- a/fedora_repository.module
+++ b/fedora_repository.module
@@ -620,10 +620,11 @@ function fedora_repository_purge_stream_form_submit($form, &$form_state) {
   } catch (exception $e) {
     drupal_set_message(t('@message', array('@message' => check_plain($e->getMessage()))), 'error');
   }
-  $form_state['redirect'] = $base_url . "/fedora/repository/$pid";
+  $form_state['redirect'] = "fedora/repository/$pid";
 }
 
 function fedora_repository_download_datastream_form(&$form_state, $pid, $dsid, $label) {
+  module_load_include('inc', 'fedora_repository', 'ObjectHelper');
   $form = array(
     '#action' => url("fedora/repository/object_download/$pid/$dsid/$label"),
     'submit' => array(
@@ -2382,3 +2383,23 @@ function fedora_repository_forms($form_id) {
   }
   return $forms;
 }
+
+function usc_mirc_imagecache_default_presets() {
+  return array(
+    'fedora_repository_collection_thumbnail' => array(
+      'presetname' => 'fedora_repository_collection_thumbnail',
+      'actions' => array(
+        0 => array(
+          'weight' => 0,
+          'module' => 'imagecache',
+          'action' => 'imagecache_scale',
+          'data' => array(
+            'width' => 200,
+            'height' => 200,
+            'upscale' => TRUE,
+          ),
+        ),
+      ),
+    ),
+  );
+}