"Book of Knowledge" . . . . "1922" . "Cassell's Book of Knowledge" . . . . . "Hammerton Book of Knowledge" . "Cassells Cabinet Cyclopedia" . . "Wonderland of Knowledge" . . . . . "Cassell's Cabinet Encyclopedia" . "Cassell's Book of Knowledge" . "Cassell's Encyclopedia of General Information" . . . "New Book of Knowledge" . . . . . . . "Waverley Book of Knowledge" .