Seneca Cameras, Seneca Camera Mfg. Co., (Rochester, NY), Catalog K, undated but 1911, ~5¼"x8¾", 76pp
This catalog is identified on page 76 as Catalog K ("Destroy Previous Issues"), but does not bear a date or copyright. However, the previous catalog, Catalog J, had a 1910 copyright, and the succeeding catalog, Catalog L, has a 1912 copyright. Therefore, despite being undated, it is clear that this catalog can be assigned a definite date of 1911.