In 1915, the Buffalo Bridge (on Q Street) opened and connected this part of Georgetown with the rest of the city east of Rock Creek Park. Soon thereafter, new construction of large apartment buildings began on the edge of Georgetown. In the early 1920s, John Ihlder led efforts to take advantage of new zoning laws to get restrictions enacted on construction in Georgetown. A 1933 study by Horace Peaslee and Allied Architects laid out ideas for how Georgetown could be preserved.