Sentence:  Still existing on a `` <WSD>Northern</WSD> Union '' telegraph form is a typical peremptory message from Peru grocer J. J. Hapgood to Burton and Graves ' store in Manchester - `` Get and send by stage sure four pounds best Porterhouse or sirloin steak , for Mrs. Hapgood send six sweet oranges '' . 
Meaning of the word marked with <WSD> tags:  any number of entities (members) considered as a unit