Jugs are split into four sections. I have done this in a way I hope makes easy to find things. In case of you being unsure ewers are jugs that have a foot and then a slimmer neck that widens to a pouring lip.
If you are looking for glass to collect I can highly recommend jugs, as good quality well designed pieces with some age can be purchased quite cheaply. It seems glass jugs are more out of fashion than decanters. The same story applies to jugs, people go straight from tap or bottle to glass, and do not concern themselves with fripperies such as jugs. In the modern world they are just another shelf filling dust gathering item that needs cleaning.
There is no magic reference book for glass jugs, so I have had to rely on my mass of reference books and also to compare other things like tankards, carafes, decanters to try and work out what they are. Some of the references won't be for a jug but for something with an afinity to the item shown.
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