You can drag the Bookmarks Menu button [[Image:Bookmark Menu icon (star on tray)|width=16]] that shows the bookmarks in a drop-down list and drag the Library button that gives access to recent bookmarks and history from the Customize palette to the Navigation Toolbar. The Bookmarks Menu button has a "View bookmarks sidebar" menu item. See "How do I add the Bookmarks Menu button to the toolbar?" *https://support.mozilla.org/en-US/kb/bookmarks-firefox *https://support.mozilla.org/en-US/kb/use-firefox-sidebar-access-bookmarks-history-synced