Seeking additional sites was the focus of urgent meetings today in Washington.

This depends on how many additional sites and networks join the effort, though.

An additional 18 sites of former houses are also considered contributing.

No additional sites are currently proposed for entry on the list.

To learn more about Ford's fascinating past and present, check out these additional sites.

He has also opened six additional sites in Westchester to service them.

Over 100 additional archeological sites have been discovered in the area since 1975.

At the same time, an additional 800 sites have been identified as potential problems.

However, due to pressure from influential politicians, additional sites were later added.

She said 17 additional sites might be needed within five years.