Brackenfern 1 Avalanche Creek, CO 2008 From Mark Duff's Portfolio
Illinois Reflection 5 Fullersburg Woods, Oak Brook, IL 2009 From Mark Duff's Portfolio
Iceblur 3 Roaring Fork River, CO 2008 From Mark Duff's Portfolio
Cherry Aspen Embrace Secret Trail, CO 2007 From Mark Duff's Portfolio
Brackenfern 2 Coal Basin, CO 2007 From Mark Duff's Portfolio
Snowdrift 1 Eagle County, CO 2006 From Mark Duff's Portfolio
Ice 3 Crystle River, CO 2006 From Mark Duff's Portfolio
Aspens Late Fall Secret Trail, CO 2007 From Mark Duff's Portfolio
California Poppy 1 Carbondale, CO 2007 From Mark Duff's Portfolio
California Poppy 2 Carbondale, CO 2007 From Mark Duff's Portfolio
Allium Dance Carbondale, CO 2007 From Mark Duff's Portfolio
Ice 5 Crystle River, CO 2006 From Mark Duff's Portfolio
Heracleum 4 Avalanche Creek, CO 2008 From Mark Duff's Portfolio
Ipomopsis Carbondale, CO 2007 From Mark Duff's Portfolio
Chair Mountain Crystle River, CO 2005 From Mark Duff's Portfolio
Illinois Reflection 17 Fullersburg Woods, Oak Brook, IL 200 From Mark Duff's Portfolio
Illinois Reflection 9 Fullersburg Woods, Oak Brook, IL 2009 From Mark Duff's Portfolio
Illinois Reflection 1 Fullersburg Woods, Oak Brook, IL 2009 From Mark Duff's Portfolio
Illinois Woods Morton Arboretum, IL 2005 From Mark Duff's Portfolio
Aspen Horizontal Coal Basin, CO 2007 From Mark Duff's Portfolio
Brackenfern 3 Avalanche Creek, CO 2008 From Mark Duff's Portfolio
Snowdrift 3 Eagle County, CO 2006 From Mark Duff's Portfolio
Illinois Reflection12 Fullersburg Woods, Oak Brook, IL 200 From Mark Duff's Portfolio
Fireweed Carbondale, CO 2007 From Mark Duff's Portfolio
Heracleum5 Avalanche Creek, CO 2008 From Mark Duff's Portfolio