Public Service Commission
The Public Service Commission is a state agency concerned with Water and Power Issues, but in 1907 it was chartered to oversee subway expansion in New York City (the Dual Contracts). The PSC was responsible for subway construction until 1924, when New York City gained local control.
This is a somewhat worn example of a PSC cover without further identification featuring the ubiquitous double flat weave pattern. Note the rounded ends of the 'stitches' and the carefully placed squares for vent holes.
Uncertain, but may be transit related as it was located along the route of the IRT Lenox Ave. Line. circa 1908 - 1924.
This cover was seen on Malcome X Blvd in Harlem and a similar one found in Brooklyn.