I saw several of these butterflies at Swan Harbor Farms in Harford County, MD on July 24th, 2010.

I saw several more at Bombay Hook NWR, DE on September 5th, 2010.

This flying Cabbage White was at Swan Harbor on September 25th, 2010.

I saw this one at Swan Harbor on July 3rd, 2011.

This Cabbage White was near Lapidum at Susquehanna State Park on August 28th, 2011. This one is female. Females have two spots on the main wing, while the males have one.

I saw this one at Swan Harbor on July 15th, 2012.

This one was at Susquehanna State Park on August 11th, 2012.

I saw this one at Swan Harbor on June 24th, 2013.

This butterfly was at Swan Harbor on July 20th, 2014.

I saw this one at Swan Harbor on July 19th, 2015.

This one was at Brookside Gardens near DC on September 5th, 2015.

I saw this one at Swan Harbor on September 4th, 2016.