On July 4, 1961 this Colorado peak was designated a national historic landmark
[DOC] [TLE] National Historic Landmarks | History Colorado [PAR] The National Historic Landmark designation recognizes the railroad's 
significance between 1879 and 1929, beginning with construction of this ... 
National Historic Landmark 7/4/1961, National Register 10/15/1966, 5CN.75 ... 
Pikes Peak [DOC] [TLE] National Historic Landmarks - US Forest Service [PAR] Pike National Forest, Pikes Peak Ranger District, Colorado Springs, Colorado (El 
Paso County).