File consists of one letter from Christian Enslin, bookseller and bookbinder, Waterloo, Ontario to Fredrick Heinitsch, M.D., Lancaster, Pennsylvania requesting the right to "Mother Drops", a medicine created by Dr. Heinitsch on which he held the patent.
The letter also includes information on bookbinding and printing practices in Upper Canada and makes reference to local figures such as Benjamin Eby, Bishop of the Mennonites.

Collection contains prints of Canadian landscapes done by William Henry Bartlett in 1841 and portraits of prominent 17th and 18th century politicians from Europe and Canada. Also included are letters from English prime ministers dating around the 1700s. The collection is arranged in one series consisting of print engravings, a file of Bartlett prints, and a scrapbook containing letters.