Pin oak Quercus palustris Location: University of Maryland, College Park, MD Year: 1999 Merckslides catalogue number: 05-10147 Comments:

Pin oak leaves frozen in ice Quercus palustris Location: Lincoln Memorial reflecting pool, Washington, DC Year: 2009 Merckslides catalogue number: 05-18590 Comments: Day of Obama inauguration

Pin oak Quercus palustris Location: Cambridge Community, University of Maryland, College Park, MD Year: 2009 Merckslides catalogue number: 05-72877 Comments:

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