Royal Dairies Ltd, Vancouver
Royal Dairies appears to have been a fairly significant operation in the 1910s and 20s, but there is little concrete information on it that I've been able to find. This government report from 1955 describes it joining with several other dairies to form The Associated Dairies Ltd. in 1931. Lists of dairies in the province throughout the 1910s list a "Royal Dairy" as operating both in Vancouver and Victoria simultaneously. It's not clear whether or not the two dairies were related (the one in Victoria continued operating long after 1931), and so far I haven't even been able to ascertain whether or not Royal Dairy and Royal Dairies Ltd. are the same company.