KJ: Recycler 2005 (extension key:kj_recycler) is a useful extension which will allow you to undelete pages of your TYPO3 site.

As stated in the description of the extension,

"In TYPO3 no file is really deleted. When you delete a template, page or page content, it is no more displayed but still exists in the database. With this plugin you have the option to delete the data unrecoverable or restore them."

It's comforting to know that nothing is really deleted in TYPO3. That along with the Recycler extension, makes it possible to recover deleted pages from TYPO3.