Before revision: Remnants Wood block pavement at the 200 block of South Camac Street in Philadelphia alt=Historic Landmark plaque for Nicolson pavement on Roslyn Place, Pittsburgh, Pennsylvania|Historic Landmark plaque for Nicolson pavement on Roslyn Place, Pittsburgh, Pennsylvania Remnants of Nicolson pavement still exist in several cities across the US.
After revision: this has subsequently been paved over with asphaltRemnants Wood block pavement at the 200 block of South Camac Street in Philadelphia alt=Historic Landmark plaque for Nicolson pavement on Roslyn Place, Pittsburgh, Pennsylvania|Historic Landmark plaque for Nicolson pavement on Roslyn Place, Pittsburgh, Pennsylvania Remnants of Nicolson pavement still exist in several cities across the US.