Missing Controller

Error: Archive.htmController could not be found.

Error: Create the class Archive.htmController below in file: nahistory.org/controllers/archive.htm_controller.php

<?php
class Archive.htmController extends AppController {

	var $name = 'Archive.htm';
}
?>

Notice: If you want to customize this error message, create nahistory.org/views/errors/missing_controller.ctp