The first is Howard & Co (Howard & Co. (1866-1937) New York, NY Branch stores were located in Newport, RI (1880 to 1937) and Paris, France.
The second is a winged S which seems to belong to to GEORGE W. SHIEBLER & CO - New YorkFounded in 1876 by George W. Shiebler. Incorporated in 1892 as George W. Shiebler & Co. Out of business in 1910.
The third mark is an X III which i am guessing is a pattern number from Howard

