Sheridan Hollow, Albany, New York
On a map made by De Witt in 1790 the name of Arbor Hill makes its first appearance on a map of Albany. In this map Arbor Hill is located in Sheridan Hollow between Orange Street and Clinton Avenue (south and north) and from Chapel Street halfway to Hawk Street (east to west); later Arbor Hill would be the name given to the Ten Broeck Mansion and surrounding neighborhood on the other side of Clinton Avenue, the former village of Colonie. On this same map a "Negro burial ground" is shown along the southern rim of the Hollow, this burial ground does not show up on any subsequent maps and it may never have been plotted and used.
Oak Hill, Austin, Texas
As Oak Hill is not an incorporated community, it does not have any legal boundaries. The community of neighborhoods is centered around the intersection of U.S. Route 290/TX-71 and Williamson Creek, roughly southwest of the center of Austin. The Oak Hill Association of Neighborhoods (OHAN) defines Oak Hill as "...starting from Travis Country in the Northwest, neighborhoods bordering Brodie Lane down to the Travis/Hays County line, following the county line on the south up to Highway 290 West, and then neighborhoods bordering Circle Drive and Thomas Springs Road and finally along the Southwest Parkway." The boundaries defined by OHAN include areas within six ZIP codes and 89 neighborhoods, including Circle C Ranch. However, only 29 neighborhood homeowners' associations are members of OHAN. The city of Austin defines West Oak Hill and East Oak Hill as neighborhood planning areas, encompassing areas adjacent to U.S. Route 290 from Circle Drive to a location slightly east of Texas State Highway Loop 1. Spanning , the neighborhood planning area is Austin's largest.