"German mail service" . . . . "Postoffice" . . "Deutsche Reichspost's" . "postal service" . "German Reichspost" . . . "Imperial Reichspost" . . "Deutsche Reichspost" . "Imperial postal service" . "first modern postal service" . "Imperial Postal Service" . "Imperial Post Office" . "German Imperial Post" . "Reich Postal Service" . "German postal service" . . "imperial postal service" . . "Imperial Post" . "Post Office" . "German Post Office" . "Imperial Mail" . "post office" . . "Reichspost" . . . . "German Mail" . . . "the Reichspost" . "Reichspost" .