Alan Cressler, September 21, 2009 via flickr

Gavin White, October 3, 2010 via flickr

Christine A. Scheller, November 3, 2012 via flickr

Rhode Island Sea Grant, October 29, 2012 via flickr

Azhar Elmiza, August 29, 2005 via flickr

Virginia Department of Transportation September 19, 2003 via flickr

Eric M. Vitale December 12, 2011 via my camera

Paris Kelly, January 1, 2006 via flickr

Stormscape Photography, March 9, 2008 via flickr

Bill Kennedy, July 8, 2008 via flickr

Jun December 26, 2012 via flickr

Cam17, August 8, 2008 via flickr

Barry, June 8, 2012 via flickr

Ralph L. Williams September 8 ,2011 via flickr

bobandteng1, August 28, 2012 via Statcrunch

January 9, 2010 via slabbed

The US National Archive September 19, 2001 via flickr

Donna, December 11, 2010 via flickr

Brent Denley, August 11, 2007 via flickr

Thomas_fitnesscoach, December 5, 2008 via flickr