Hinckley & Co.'s Express, Denver City (K.T.), clear Nov. 28, 1860 express company datestamp, ms. 'Paid', on yellow cover to Central City (K.T,), with enclosure datelined at Denver on Nov. 27, business contents mention 'The Yankees are getting up a grand demonstration for Thursday...', slightly reduced at R., otherwise fresh and fine, scarce and interesting, evidently sent by a Southern sympathizer