Alan Cressler:
Beggiatoa alba (possible identification), Sulphur Spring, Blount County, Alabama 2
Alan Cressler:
Beggiatoa alba (possible identification), Sulphur Spring, Blount County, Alabama 5
Alan Cressler:
Beggiatoa alba (possible identification), Sulphur Spring, Blount County, Alabama 8
Alan Cressler:
Big Coon Blue Hole, Big Coon Creek, Jackson County, Alabama 1
Alan Cressler:
Big Spring, Big Spring Park, Huntsville, Madison County, Alabama 1
Alan Cressler:
Big Spring, Big Spring Park, Huntsville, Madison County, Alabama 2
Alan Cressler:
Big Spring, Big Spring Park, Huntsville, Madison County, Alabama 3
Alan Cressler:
Blue Spring, Blue Springs State Park, Barbour County, Alabama 1
Alan Cressler:
Blue Spring, Blue Springs State Park, Barbour County, Alabama, Daniel Thompson 1
Alan Cressler:
Jeffers Spring, City of Glencoe, Etowah County, Alabama 1
Alan Cressler:
Jeffers Spring, City of Glencoe, Etowah County, Alabama 2
Alan Cressler:
Jeffers Spring, City of Glencoe, Etowah County, Alabama 3
Alan Cressler:
Jeffers Spring, City of Glencoe, Etowah County, Alabama 4
Alan Cressler:
Jeffers Springs, City of Glencoe, Etowah County, Alabama 1
Alan Cressler:
Jeffers Springs, City of Glencoe, Etowah County, Alabama 1
Alan Cressler:
Jeffers Springs, City of Glencoe, Etowah County, Alabama 2
Alan Cressler:
Jeffers Springs, City of Glencoe, Etowah County, Alabama 2
Alan Cressler:
Kyle Spring, Mississippian Age, Monteagle Limestone, Jackson County, Alabama 1
Alan Cressler:
Kyle Spring, Mississippian Age, Monteagle Limestone, Jackson County, Alabama 2
Alan Cressler:
Kyle Spring, Mississippian Age, Monteagle Limestone, Jackson County, Alabama 3
Alan Cressler:
Maiden Hair Spring, Covington County, Alabama 1
Alan Cressler:
Maiden Hair Spring, Covington County, Alabama 2
Alan Cressler:
Maiden Hair Spring, Covington County, Alabama 3
Alan Cressler:
Morgan Spring, East Fork Lookout Creek Valley, Lookout Mountain, Battelle Lands, DeKalb County, Alabama 1
Alan Cressler:
Morgan Spring, East Fork Lookout Creek Valley, Lookout Mountain, DeKalb County, Alabama 2
Alan Cressler:
Shultz Creek Church Spring, Bibb County, Alabama 1
Alan Cressler:
Spring, Still House Hollow, Sharp-Bingham Mountain Preserve, The Nature Conservancy, Jackson County, Alabama 1
Alan Cressler:
Sulphur Spring, Sulfur-Oxidizing Bacteria, Blount Springs, Blount County, Alabama 4
Alan Cressler:
big coon blue hole, big coon valley, jackson county, alabama, thomas duselis, casey faulkner 1
Alan Cressler:
blue springs, blue springs state park, barbour county, alabama 1
