As noted in an earlier entry, the Coors family made pots (the ceramic kind) during Prohibition. The image here shows the occupation of several members of the Coors family in the 1920 census listed as being also being involved in the malted milk business. The servants are members of the Coors family household staff. The complete enumeration can be seen here. You can search the 1920 United States Federal Census and see what they were making (or where they were working).