. APO Home Page . SDSS Home Pages . E-Mail the Archive Administrator . PORTAL: APO Technical Documents Database . If you are unable to access the database, please contact the Achive Server. Please Read Me before proceeding with your database search . Using any or all of the fields, a search will return a complete list of documents currently in the database. Search Database . The results of a search will be returned as a list. From this list you can perform additional actions.