Baltimore Orioles Return to DC for Beltway Series
Nationals, Orioles savor concept of Beltway Series - The San Diego Union-Tribune
Battle of the Beltway: Baltimore Orioles vs. Washington Nationals Preview, News, Scores, Highlights, Stats, and Rumors
Nats open five-game homestand with Beltway Series vs. Orioles, by Nationals Communications
Beltway Series - Wikipedia
History of Beltway Series between O's and Nats
2011 MCB Quantico Guide with Phone & Yellow Pages by DCMilitary.Com - Issuu
In the Battle of the Beltway, it's advantage Baltimore over the Nationals - The Washington Post
Baltimore City Paper, Vol. 32, No. 38: Best of Baltimore (part 1) by Baltimore City Paper - Issuu
Things to do in Baltimore this week 9/19 – baltimore food and fun
Beltway Series: Washington Nationals take on Baltimore Orioles