It is super hard to find old local records. In my case, out of approximately 20 local soda companies, to date, I have seen only a handful of records online. You'll probably have to check local, county, or state archives. If you have one, try contact a local bottle group (like on FB). Veteran diggers will know more about bottles than there are extant records of the companies that made them.Question for the experts, what are reasons i can' find records of an incorporated bottling works have been searching. thanks