Well, it seems thta folks don't have any suggestions for you.

I suggests you show your image, or a sample, to the folks at your county's Extension Service office.
You can locate that office with the map at the ink, below ....

Oh yes, please return to tell us what you learned.

Here is a link that might be useful: Locate your county's Extension Service office

The link below goes directly to the Penn State CES web site.

Here is a link that might be useful: PSU CES