Leather drinking vessels can be found back to the middle ages and through the 19th century. With that kind of timeline, it is helpful to have a reference for the many styles and names. Kent Demmary compiled a wonderful book of descriptions and basic history of these different vessels. If you are just looking to dip your toes, this short and easy read is perfect. If you are looking for a more detailed look at the art of leather drinking vessels, this makes a great companion for Oliver Baker's Black Jacks and Leather Bottells.