Photos I took of the NYC subway
Grungy overlay: MW_12x12_300dpi_24 from PA Grunge set, Photoshop Artistry class
Clipping masks: KPertiet_StampedBlocksNo20-3, KPertiet_StampedBlocksNo20-1, and KPertiet_StripingGrungeNo1-4, Destination NYC Blendables