 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Spurgeon Hollow in South Indiana 11/1/98 (Knobstone Trail, November 1, 1998)
 - Knobstone Trail near Elk Creek? 10/31/98 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 - Knobstone Trail near Elk Creek? 10/31/98 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 - Knobstone Trail near Elk Creek? 10/31/98 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 - Knobstone Trail near Elk Creek? 10/31/98 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 - Knobstone Trail near Elk Creek? 10/31/98 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 - Knobstone Trail near Elk Creek? 10/31/98 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 - Knobstone Trail near Elk Creek? 10/31/98 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 - Knobstone Trail near Elk Creek? 10/31/98 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 - West Lafayette, Oct. 26-28 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 - West Lafayette, Oct. 26-28 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 - West Lafayette, Oct. 26-28 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 - West Lafayette, Oct. 26-28 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 - A park near Celery Bog in West Lafayette 10/25/98 (Lafayette - Knobstone Trail, Indiana, October 25 - 31, 1998)
 Remains of a cardinal (the state bird of Indiana) on a trail from Lafayette to Battle Ground along Wabash River. Indiana, January 31, 1998.
 A trail in Happy Hollow Park. West Lafayette, Indiana, October 21, 1999.
 A trail in Happy Hollow Park. West Lafayette, Indiana, October 21, 1999.
 A trail in Happy Hollow Park. West Lafayette, Indiana, October 27, 1999.
 A spider holding a white ball on a hollow log at Heritage Trail near Battle Ground, north from Lafayette. Indiana, September 11, 1999.
 Heritage Trail along Wabash River between Lafayette and Battle Ground, Indiana, February 22, 1998.
 Heritage Trail along Wabash River between Lafayette and Battle Ground, Indiana, February 22, 1998.
 Winter mushrooms on Heritage Trail between Lafayette and Fort Ouiatenon, Indiana, February 21, 1998.
 View of Wabash River from Heritage Trail north from Lafayette. Indiana, January 31, 1998.
 Mushrooms on a log at Heritage Trail along Burnett Creek near Battle Ground, Indiana, February 22, 1998.
 View of Wabash River from Heritage Trail north from Lafayette. Indiana, January 31, 1998.
 - Trip to Harrison-Crawford State Forest, South Indiana, May 15-17 (Indiana and Lafayette, May 15 - 24, 1998)
 - Trip to Harrison-Crawford State Forest, South Indiana, May 15-17 (Indiana and Lafayette, May 15 - 24, 1998)
 - Trip to Harrison-Crawford State Forest, South Indiana, May 15-17 (Indiana and Lafayette, May 15 - 24, 1998)
 - Trip to Harrison-Crawford State Forest, South Indiana, May 15-17 (Indiana and Lafayette, May 15 - 24, 1998)
 - Trip to Harrison-Crawford State Forest, South Indiana, May 15-17 (Indiana and Lafayette, May 15 - 24, 1998)
 - Trip to Harrison-Crawford State Forest, South Indiana, May 15-17 (Indiana and Lafayette, May 15 - 24, 1998)
 - Trip to Harrison-Crawford State Forest, South Indiana, May 15-17 (Indiana and Lafayette, May 15 - 24, 1998)
 Green garlic on Heritage Trail along Burnett Creek near Battle Ground, Indiana, February 14, 1998.
 A shrub in a forest on Heritage Trail near Battle Ground, north from Lafayette. Indiana, January 31, 1998.
 Rotten wood on a trail from Lafayette to Battle Ground along Wabash River. Indiana, January 31, 1998.
 A raccoon eaten by an eagle(?) on Heritage Trail from Lafayette to Fort Ouiatenon. Indiana, February 8, 1998.
 Rapid flow of Wabash River. Heritage Trail from Lafayette to Fort Ouiatenon, Indiana, February 8, 1998.
 Corn farm near Heritage Trail along Wabash River from Lafayette to Fort Ouiatenon. Indiana, February 8, 1998.
 View of Wabash River (near confluence with Burnett Creek) from Heritage Trail north from Lafayette. Indiana, January 31, 1998.
 View of a sewage plant on Wabash River from Heritage Trail between Lafayette and Fort Ouiatenon. Indiana, February 8, 1998.
 View of Wabash River and Heron Island from Heritage Trail between Lafayette and Battle Ground, Indiana, February 14, 1998.
 Baby snakes on a trail along Wabash River under State Street bridge. West Lafayette, Indiana, March 21, 1998.
 Skunk cabbage flowers in a creek on Heritage Trail near Battle Ground, north from Lafayette. Indiana, January 31, 1998.
 Finger Lakes Trail near Michigan Hollow Road, part of Abbott Loop. Danby, New York, November 6, 2005
 View of trees cut by beavers and industrial buildings on the opposite side of Wabash River from Heritage Trail to Fort Ouiatenon. Near West Lafayette, Indiana, February 8, 1998.
 Rock shelters of Hale Hollow Creek near East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
 Rock shelters of Hale Hollow Creek East Trail in Lost Maples State Natural Area, at evening. Vanderpool, Texas, November 8, 2008
 View of Wabash River from a trail to Fort Ouiatenon. Indiana, November 13, 1999
 A house at South 9th Street. Lafayette, Indiana, January 18, 1998.
 Hedge apples (osage orange) among first year garlic mustard leaves on a trail to Battle Ground. Indiana, November 26, 1999
 Ammonites Wall trail south from Ramon Crater from Eilat Road south from Beer-Sheva. The Middle East, November 7, 2002
 Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 A road near Fen Way trail in Lime Hollow Preserve in Cortland, east from Ithaca. New York, December 3, 2005
 Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, December 14, 2008
 Oak forest on Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Vines on Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, December 14, 2008
 Oaks of Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, December 14, 2008
 Intersection of State Street with South Street (The Village area, shopping district). West Lafayette, Indiana, March 10, 1998.
 Happy Hollow Park. West Lafayette, Indiana, May 5, 1999.
 A mushroom with brown spores near Coakley Hollow Trail in Lake of the Ozarks State Park. Missouri, September 10, 2005
 Bark of an oak tree on Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
 Oaks and vines on Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, December 14, 2008
 Some remains at High Vista Loop trail in Lime Hollow Preserve in Cortland, east from Ithaca. New York, December 3, 2005
 Happy Hollow Park. West Lafayette, Indiana, October 21, 1999.
 Happy Hollow Park. West Lafayette, Indiana, October 21, 1999.
 Happy Hollow Park in West Lafayette, Indiana, April 30, 1999.
 Happy Hollow Park in West Lafayette, Indiana, September 22, 1999.
 Happy Hollow Park in West Lafayette, Indiana, October 10, 1999.
 Happy Hollow Park. West Lafayette, Indiana, October 21, 1999.
 Winterberry near Plantation Trail in Barataria Preserve. South from New Orleans, Louisiana, November 26, 2006
 Slopes of Happy Hollow Park in West Lafayette, Indiana, October 10, 1999.
 Oaks in Happy Hollow Park. West Lafayette, Indiana, October 27, 1999.
 Bottom of Happy Hollow Park. West Lafayette, Indiana, October 27, 1999.
 A boardwalk of Ring Levee Trail in Barataria Preserve. South from New Orleans, Louisiana, November 11, 2006
 Fall colors in Happy Hollow Park. West Lafayette, Indiana, October 27, 1999.
 Soil erosion in Happy Hollow Park. West Lafayette, Indiana, October 27, 1999.
 Maple crowns in Happy Hollow Park. West Lafayette, Indiana, October 27, 1999.
 Fall colors in Happy Hollow Park. West Lafayette, Indiana, October 27, 1999.
 Late fall in Happy Hollow Park. West Lafayette, Indiana, October 27, 1999.
 Boardwalk of Marsh Overlook Trail in Barataria Preserve at evening. South from New Orleans, Louisiana, November 26, 2006
 A rotten tree near Ring Levee Trail in Barataria Preserve. South from New Orleans, Louisiana, November 11, 2006
 Red lichen on a tree at the end of Ring Levee Trail in Barataria Preserve. South from New Orleans, Louisiana, November 11, 2006
 South Rim, view from Fresno Circle campsite near Dodson Trail. Big Bend National Park, Texas, November 23, 2007
 Ringless honey mushrooms (Armillaria tabescens) near Plantation Trail in Barataria Preserve. South from New Orleans, Louisiana, November 11, 2006
 Old suspension bridge over a tributary of Lampasas River at the head of Stillhouse Hollow Nature Trail in Chalk Ridge Falls Park. Belton - Killeen, Texas, August 17, 2008
 Rocks, a pond and a foot bridge of Maple Trail, view from East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
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