Parry made the first barometric measurements of the heights of many of Colorado's mountains. Although he did not reach the summit, he estimated the height of Longs Peak, and he was the first to climb and measure Grays Peak. Parry Peak (4,082 m / 13,391 feet) in Colorado is also named after him.[4]
^Mathias, Mildred E. 1929. Studies in the Umbelliferae II. Ann. Mo. Bot. Gard. 16:393-394, Plate 33.
^Gray, Asa. 1868. Characters of New Plants of California and Elsewhere principally of those collected by H. N. Bolander in the State Geological Survey. Proceedings of the American Academy of Arts and Sciences 7: 397. 1868