Can you update to Firefox 30? There is a new toolbar button in Firefox 30 to make it easier to show sidebars. If you want to try that, you can use either: * "3-bar" menu button > "?" button > About Firefox * (menu bar) Help menu > About Firefox Firefox should check for updates when you open that dialog. Or, sticking with Firefox 29, you can check the View menu. If you do not ordinarily display the classic menu bar at the top, you can either tap the Alt key or press the F10 key to display it temporarily. Then try: View > Sidebar and check for the desired sidebar there.