This one-of-a-kind book describes some 1400 different glass cutters collected from around the world by the author during the past 35 years. A brief history of flat window glass describes its manufacture, application, taxation, etc. from the time of the Romans, through France and England to the United States. The early use of flint tools and grozing yrnes for cutting and shaping the glass is noted. These tools were used for shaping the stained glass in the early cathedrals. Five hundred U.S. glass cutter patents and 28 U.S. glass cutter design patents beginning in 1860 through 2009 are listed by date, inventor, and title. A list of corporate, product line, distributor, etc. names are also described further as being in one or more of the 23 "Style Categories" the author has set up that show pictures of 600 cutters and detailed descriptions of all 1400 different glass cutters. An extensive bibliography is included.