Did you know that the WMATA SmartTrip card and the MTA CharmCard are the same card?
from Rebuilding Place in the Urban Space by Richard Layman
<a href="http://urbanplacesandspaces.blogspot.com/2011/12/did-you-know-that-wmata-smarttrip-card.html">http://urbanplacesandspaces.blogspot.com/2011/12/did-you-know-that-wmata-smarttrip-card.html</a>;