5 Jan 1998
Andy:
Harold Mathiak's book: "A river survey of the unionid mussels of
Wisconsin 1973-1977" has a colored photo of freshwater mussel trails.
Essentially this is out of print, but one of the freshwater persons in your
area should have it. If you want this, and have trouble finding the book, let
me know.
Marian E Havlik
Malacological Consultants
1603 Mississippi Street
La Crosse, WI 54601-4969
email: [log in to unmask]
Phone/Fax: 608-782-7958