Oakland County Earth Science Club
The Petoskey Stone
The Petoskey Stone is Oakland County Earth Science Club's monthly newsletter.  The links below will allow you to either open, or save a .pdf file of the newsletter.  These files open with software called Adobe Acrobat that is probably already on your computer.  If not, it is a free download.
Petoskey Stone - March 2017
Petoskey Stone - April 2017
Petoskey Stone - May 2017
Petoskey Stone - June 2017