Weathered Sign, Great Spruce Head Island, Maine, July 14, 1969

Red Soldier Lichen, Great Spruce Head Island, Maine, July 11, 1969

Water Worn Rock with Black Algae, Great Spruce Head Island, Maine, July 25, 1969

Green and Black Lichen, Great Spruce Head Island, Maine, July 10, 1969

Green Lichen on Rock, Great Spruce Head Island, Maine, July 10, 1969

Lichen on Birch Trunk, Great Spruce Head Island, Maine, July 11, 1969

Moss and Dead Tree, Great Spruce Head Island, Maine, July 11, 1969

Seaweed with Yellow Air Bladders, Great Spruce Head Island, Maine, July 21, 1969

Brown and Black Rocks, Great Spruce Head Island, Maine, July 21, 1969

Green Algae in Littoral Zone, Hard Head Island, Maine, July 26, 1969

Stained Shale-Like Rock, Great Spruce Head Island, Maine, July 25, 1969

Folded Schist and Seaweed, Little Spruce Head Island, Maine, July 27, 1969

Twin Flower and Shell, Great Spruce Head Island, Maine, July 2, 1971

Twin Flower and Shell, Great Spruce Head Island, Maine, July 2, 1971

Polypody Ferns, Great Spruce Head Island, Maine, July 2, 1971

Small Skunk Cabbage, Great Spruce Head Island, Maine, July 11, 1969

Stained Shale-Like Rock, Great Spruce Head Island, Maine, July 25, 1969

Orange and Black Lichen, Hard Head Island, Maine, July 26, 1969

Lichen and Moss, Great Spruce Head Island, Maine, July 11, 1969

Yellow and Green Lichen, Great Spruce Head Island, Maine, July 11, 1969