Seneca Cameras, Seneca Camera Mfg. Co., (Rochester, NY), Catalogue T, copyright 1919, issued late 1919 or early 1920, ~6"x9", 40pp

After a series of years in which the catalogs have only letters and not copyright dates, this one has both the letter, T, and a copyright date, 1919.  It came with a 12-page price list insert that is stated to be effective April 10, 1920.  From 1910 through 1913, when all catalogs bore both letters and copyright dates, there was one catalog per year.  Yet from 1914 through 1919, when catalogs bore only letters, there are six catalogs per five years.  One year had two catalogs.  From at least as early as 1906 through 1917, prices in the catalogs had been rather stable: for instance, the three sizes of Competitor View without lens were $15.00, $16.00 and $17.00 throughout that time period right through Catalogue Q (c. 1917).  However, Catalogue R shows a price increase ($17.00, $18.00 and $19.00).  Catalogue S shows another ($22.50, $23.50 and $25.00).  Catalogue T (shown here) shows yet another ($24.00, $25.07 and 26.67) and the Price List Insert to Catalog T (shown here) has the largest increase yet ($29.87, $32.00 and $35.20).  It is therefore quite probable that it is the last year, 1919, that had significant enough inflation to require the printing of two catalogs.