Letters and orders sent mainly from the Chicago office of the Singer Manufacturing Company to the main office in New York, 1862-1871.

Materials pertain to request for supplies (e.g. needles, varnished covers, papers, etc.), financial transfers, machine shipments and repairs, the appointment of authorized sales agents, an exhibition at the state fair, competition with other firms, and other details regarding the daily operation of a branch office. A few letters are signed by Bolton, but most are signed for him by his assistant, John Voight. Also, there is one letter each from the Lamb Knitting Machine Co. in Chicopee Falls, Massachusetts; a Singer office in Buffalo, N.Y.; an Oswego, N.Y. firm; and A. W. Todd of Chicago.