Catalogue of Hawk-Eye Cameras and Photographic Supplies Season of 1898, Blair Camera Co., (Boston, MA), dated 1898, ~7"x5", 72pp

From 1906 through 1913, Seneca established a routine of publishing one catalog per, usually "numbered" using a sequential letter of the alphabet, and often also bearing a copyright date. For instance, Catalog L had a copyright of 1912, and Catalog M had a copyright of 1913.  It is a fair inference that Catalog N is for 1914.