John, check out any existing ads for Launderall you may have.  IIRC, one of the mfr. towns on the Jacobs Launderall ad is Holly Michigan.  If you go by  the cities of production you may find some of what you are looking for in the archives of local newspapers.  I was thinking of corporate news,  factory  production awards that type of thing.  The Holly area IIRC, was also covered in the Flint Journal.  You might try the newspaper archives in other Launderall manufacturing cities.  The scary thing about newspapers merging/closing is the careless loss of archives. Best of Luck. -A