Uncovering the Past: A Look at a Historic Map from the Harvard University Online Archives November 27, 2021March 7, 2014 by ghostsofdc Here’s a cool map that we dug up in the Harvard University online archives. Base map of the District of Columbia showing public and zoning areas / base prepared in the Office of the Surveyor, D.C., by direction of the Engineer Commissioner, D.C. Source: Harvard College Library