The Carlton Brewery had been operating in Bouverie Street, North Melbourne, since the 1860s, but in 1907 it united with the Foster’s, Victoria, Shamrock, McCracken and Castlemaine breweries to form Carlton & United Breweries (CUB).  In the same year, the letters VB were first added to the label of the Victoria Brewery’s Bitter Ale. The CUB website has a timeline with some wonderful old photos.