Thank you for posting your new found info on these stocks. From the postings over the post few years, it seems these people who were trying to start a new business plant and had managed to interest many persons in the midwest to invest. Wonder what the factory was to manufacture. All is a puzzle.
I have many names of Polish origin in my Wisconsin ancestors, but Piekarski was not one of them.
Maybe some one else on the site will able to go a new direction with this search and we'll know more.