Welcome, Greg! It shouldn't be hard to find glass mugs at department stores, Walmart or stores like Pottery Barn. But why not get a really cool "authentic" mug with a logo on eBay? Or, many brewers sell new logo mugs (e.g.
http://sprecherbrewery.com, which used to carry a nice mug with their excellent brand's logo on it).
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Bottoms up!
Kevin Guske
So heres a tribute toast with root beer in hand to you and the many mugs of suds along your happy trails. --Charles Wysocki, artist and root beer fan, 1928-2002