diff --git a/main/webapp/modules/core/MOD-INF/controller.js b/main/webapp/modules/core/MOD-INF/controller.js
index 0acb0d393..7ecdff3e4 100644
--- a/main/webapp/modules/core/MOD-INF/controller.js
+++ b/main/webapp/modules/core/MOD-INF/controller.js
@@ -459,7 +459,8 @@ function init() {
       "scripts/dialogs/templating-exporter-dialog.js",
       "scripts/dialogs/column-reordering-dialog.js",
       "scripts/dialogs/custom-tabular-exporter-dialog.js",
-      "scripts/dialogs/expression-column-dialog.js"
+      "scripts/dialogs/expression-column-dialog.js",
+      "scripts/dialogs/http-headers-dialog.js",
     ]
   );
 
diff --git a/main/webapp/modules/core/langs/translation-en.json b/main/webapp/modules/core/langs/translation-en.json
index 15e0acec8..c9a571ce2 100644
--- a/main/webapp/modules/core/langs/translation-en.json
+++ b/main/webapp/modules/core/langs/translation-en.json
@@ -541,6 +541,7 @@
         "throttle-delay": "Throttle delay",
         "milli": "milliseconds",
         "url-fetch": "Formulate the URLs to fetch:",
+        "http-headers": "Define any HTTP headers to be used when fetching URLs:",
         "enter-col-name": "Enter new column name",
         "split-col": "Split column",
         "several-col": "into several columns",
diff --git a/main/webapp/modules/core/scripts/dialogs/http-headers-dialog.html b/main/webapp/modules/core/scripts/dialogs/http-headers-dialog.html
new file mode 100644
index 000000000..cebfa2407
--- /dev/null
+++ b/main/webapp/modules/core/scripts/dialogs/http-headers-dialog.html
@@ -0,0 +1,6 @@
+<div class="grid-layout layout-tight layout-full"><table rows="4" cols="4">
+  <tr>
+    <td colspan="2"><div class="input-container">KEY</div></td>
+    <td colspan="2"><div class="input-container">VALUE</div></td>
+  </tr>
+</table></div>
\ No newline at end of file
diff --git a/main/webapp/modules/core/scripts/dialogs/http-headers-dialog.js b/main/webapp/modules/core/scripts/dialogs/http-headers-dialog.js
new file mode 100644
index 000000000..96a7a170a
--- /dev/null
+++ b/main/webapp/modules/core/scripts/dialogs/http-headers-dialog.js
@@ -0,0 +1,68 @@
+/*
+
+Copyright 2017, Owen Stephens
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+    * Neither the name of the copyright holder nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,           
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY           
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+function HttpHeadersDialog(title, headers, onDone) {
+    this._onDone = onDone;
+
+    var self = this;
+    var frame = DialogSystem.createDialog();
+    frame.width("700px");
+    
+    var header = $('<div></div>').addClass("dialog-header").text(title).appendTo(frame);
+    var body = $('<div></div>').addClass("dialog-body").appendTo(frame);
+    var footer = $('<div></div>').addClass("dialog-footer").appendTo(frame);
+    var html = $(HttpHeadersDialog.generateWidgetHtml()).appendTo(body);
+    
+    this._elmts = DOM.bind(html);
+        
+    DialogSystem.showDialog(frame);
+    this._previewWidget = new HttpHeadersDialog.Widget(
+        this._elmts, 
+        headers
+    );
+}
+
+HttpHeadersDialog.generateWidgetHtml = function() {
+    var html = DOM.loadHTML("core", "scripts/dialogs/http-headers-dialog.html");
+    return html;
+};
+
+HttpHeadersDialog.Widget = function(
+    elmts, 
+    headers
+) {
+    this._elmts = elmts;
+    this._headers = headers;
+            
+    var self = this;
+};
\ No newline at end of file
diff --git a/main/webapp/modules/core/scripts/views/data-table/add-column-by-fetching-urls-dialog.html b/main/webapp/modules/core/scripts/views/data-table/add-column-by-fetching-urls-dialog.html
index e51bc2e52..31fa826cc 100644
--- a/main/webapp/modules/core/scripts/views/data-table/add-column-by-fetching-urls-dialog.html
+++ b/main/webapp/modules/core/scripts/views/data-table/add-column-by-fetching-urls-dialog.html
@@ -21,6 +21,9 @@
 	     <input type="checkbox" name="dialog-cache-responses" id="$add-column-cache-responses" checked="checked" />
 		<label for="$add-column-cache-responses" bind="or_views_cacheResponses"></label></td>
         </tr>
+        <tr><td colspan="4"><h3><span bind="or_views_httpHeaders"></span></h3></td></tr>
+        <tr><td colspan="4">$HTTP_HEADERS_WIDGET$</td></tr>
+        </tr>
         <tr><td colspan="4"><h3><span bind="or_views_urlFetch"></span></h3></td></tr>
         <tr><td colspan="4">$EXPRESSION_PREVIEW_WIDGET$</td></tr>
       </table></div>
diff --git a/main/webapp/modules/core/scripts/views/data-table/menu-edit-column.js b/main/webapp/modules/core/scripts/views/data-table/menu-edit-column.js
index e43491e8c..351fa3027 100644
--- a/main/webapp/modules/core/scripts/views/data-table/menu-edit-column.js
+++ b/main/webapp/modules/core/scripts/views/data-table/menu-edit-column.js
@@ -91,7 +91,9 @@ DataTableColumnHeaderUI.extendMenu(function(column, columnHeaderUI, menu) {
   var doAddColumnByFetchingURLs = function() {
     var frame = $(
         DOM.loadHTML("core", "scripts/views/data-table/add-column-by-fetching-urls-dialog.html")
-        .replace("$EXPRESSION_PREVIEW_WIDGET$", ExpressionPreviewDialog.generateWidgetHtml()));
+        .replace("$EXPRESSION_PREVIEW_WIDGET$", ExpressionPreviewDialog.generateWidgetHtml())
+        .replace("$HTTP_HEADERS_WIDGET$", HttpHeadersDialog.generateWidgetHtml())
+        );
 
     var elmts = DOM.bind(frame);
     elmts.dialogHeader.text($.i18n._('core-views')["add-col-fetch"]+" " + column.name);
@@ -103,6 +105,7 @@ DataTableColumnHeaderUI.extendMenu(function(column, columnHeaderUI, menu) {
     elmts.or_views_setBlank.text($.i18n._('core-views')["set-blank"]);
     elmts.or_views_storeErr.text($.i18n._('core-views')["store-err"]);
     elmts.or_views_cacheResponses.text($.i18n._('core-views')["cache-responses"]);
+    elmts.or_views_httpHeaders.text($.i18n._('core-views')["http-headers"]);
     elmts.or_views_urlFetch.text($.i18n._('core-views')["url-fetch"]);
     elmts.okButton.html($.i18n._('core-buttons')["ok"]);
     elmts.cancelButton.text($.i18n._('core-buttons')["cancel"]);