William Zane Cozens was born in Canada on July 2, 1830. After spending some time in New York, he moved to Central City Colorado in 1859, lured by the rumor of gold in the mountains. There, he became well known as a steady and trusted lawman.

In December 1860 he married Mary York, who had been born in England in 1830.  Mary was a devout Roman Catholic and was not happy with the uproarious mining camp of Central City and the constant threat to her husband in his role as Sheriff. So by the mid-1870's, they decided to relocate over the Continental Divide and established a hay ranch and stage stop in Middle Park (north of the present town of Winter Park). They had seven children, although only three ? Mary Elizabeth, Sarah Agnes and Willie ? survived infancy.

Mr. Cozens became the Fraser postmaster in 1876, holding the position until his death in 1904. On July 29, 1878, there was a total eclipse of the sun over Colorado.  The Ute leader Tabernash took that as a divine omen to take action against the increasing encroachment of white settlers, miners and hunters into Ute hunting grounds. Tabernash gathered 40 armed warriors and set out to attack the Cozens Ranch. Billy Cozens negotiated with the group, offered food and finally persuaded them to move on.  The group ended up confronting another rancher and the face off resulted in the death of Tabernash (more details under Tabernash page). 

Mary worked very hard to make their isolated home a pleasant place.  She even ordered dandelion seeds from a seed catalog in order to add color and zest to her garden.  One can speculate that the source the abundant dandelions in the Valley are the result of Mary's original plants.

The Cozens Families' stage stop became a well-known stopping place for summer tourists, who often enjoyed Mary's fine meals and "Uncle Billy's" (Mr. Cozens' nickname) tales from his days as a Gilpin County lawman. When Billy dies in 1904, none of his children had any offspring so Mary left the ranch to the Catholic Church and Regis University, which built a retreat on the property.  In 1987 the ranch house was given to the Grand County Historical Association and now houses a museum.   

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After his discharge from the Union Army in 1865, a veteran who lost his right arm at the Battle of Shiloh, Tennessee as a commander of a field artillery battery, John Wesley Powell was appointed curator of the Illinois Natural History Society’s Museum located at Illinois State University-Normal. Later, he was a Professor of Natural Science at Illinois Wesleyan University-Bloomington. 

In the summer of 1867, Professor Powell and his wife Emma, brought five students of the two university’s and six educators at other Illinois schools to Colorado Territory. Two peaks over 14,000 feet were climbed. Pike’s Peak (Emma was the 4^thwoman to do so), and Mt. Lincoln. The expedition combined exploration and higher education of large scale student field trips was the first of its kind in American college history. 

In the autumn, the Powell’s visited the natural Middle Park hot springs (the heart of Hot Sulphur Springs) owned by William N. Byers editor of the Rocky Mountain News. The caretaker of the springs introduced himself as Jack Sumner, also a Union Army veteran, and Byers’ brother-in-law. Near the springs was the Grand River as the headwaters of the Colorado River were called. Around a campfire Powell and Sumner made plans for a Colorado River Exploring Expedition. Looming over this decision on the eastern horizon was Long’s Peak.  In November, Wes and Emma Powell departed for Illinois filled with fortitude to return to Colorado. 

John Wesley Powell sought financing for an 1868 expedition from the museum and university’s boards of education, being happy to oblige. However, his request to draw supplies from U.S. Army western warehouses took an Act of Congress to approve. The Smithsonian Institute donated scientific materials. The expeditions purpose was to stock the natural history museum with large collections of specimens representing different sciences and illustrating the resources of the country. Before leaving Illinois for Colorado, it was understood that the ascent of Long’s Peak would be attempted. 

At Chicago on June 29^th, a special Pullman car of the Chicago & Northwestern Railroad arrived with a banner lettered “Colorado Scientific Exploring Expedition”. At 3 p.m. Professor and Mrs. Powell, with 19 others were taken to Omaha, Nebraska traveling all night. In the morning they rode a Union Pacific train to Cheyenne, Wyoming. They were organized into messes of four and drew supplies from the army warehouse. Each man had to break his own bronco for the pack train ride to Denver. One man was bucked into a cactus. A Reverend was thrown with his foot hung in a stirrup. While being dragged he said, “take hold of her boy’s. Whoa!  Sweet little angel you.” They arrived and camped at Denver on July 14^th. Then proceeded to Empire where they were greeted by mountain man and guide Jack Sumner,  William Byers, and Ned Farrell.  

So much was untouched to be plucked in the names of anthropology to zoology. A week was spent on Berthoud Pass. One young scientist shot a jack rabbit thinking it an antelope. Jack Sumner was used to dudes. Finally, the expedition arrived at Mr. Byers’ resort where headquarters and the Reverend’s “Preaching Tent” was set up. Rest and relaxation were enjoyed by soaking in the hot springs. 

Professor Powell used his military rank Major. He never let the loss of his right arm hinder him. The Major took a trip to the Rabbit Ears and Gore Range where the highest peak is named Mt. Powell. When he returned the Major selected his student squad for the ascent of Long’s Peak. Chosen were L.W. Keplinger, and Sam Garman. One old mountaineer told the two that nothing could get them there that didn’t have wings. The idea of tenderfeet trying the ascent was ridiculous!

August 20^th-22^{nd -}The Major, his brother Walter Powell, Jack Sumner, William Byers, Ned Farrell, and the squad, departed headquarters mounted on horses, and one pack mule with 10 days rations. Each carried a pistol or rifle. The squad had weather equipment. They camped at Grand Lake. In the morning the party of seven rode up a steep rock ridge almost impassable by fallen timber. They corralled the equines at Mt. McHenry elevation 13,327 feet and camped for the night. At 7 a.m. the Major made bacon and biscuits. The men stuffed their pockets with a two day’s allotment. Leaving their firearms behind Sumner and Keplinger led the way to Wild Basin over tortuous terrain. All arrived exhausted at 2 p.m. except for Keplinger who volunteered to find a route to Long’s Peak. Keplinger went through the notch and was within 200 feet of the crown. Turning to enjoy the view he almost became an eternal resident of Estes Park. Nightfall was setting in and he had to return to Wild Basin. To his amazement Sumner was hollering and had lit beacon fires. At 10 p.m. Keplinger and Sumner were in camp. 

At 6 a.m. on August 23^rd, Keplinger led the way. Required of each was caution, coolness, and intense labor; life depending on the grasp of fingers in a crevice that would hardly admit them. Moving up in order were Keplinger, the Major, Sumner, Byers, and the others. Before 10 a.m. the entire party stood on Long’s Peak summit, elevation 14,255 feet. “Glory to God!” shouted the Major. For three hours they remained enjoying the spectacular views. North, south, east, and west. They counted 32 alpine lakes. An American flag was flown and left. A monument was built, and a baking soda can was used as a time capsule. Placed in the capsule were each member’s names, and the temperature. A biscuit was going into the capsule but the Major objected as he wanted fame as a mountain climber and not a biscuit maker. The capsule was sealed for the next climbers to find. Wine was sprinkled on the monument and disposed of in the usual manner. Two members abstained. 

The descent route went towards the branches of the St. Vrain River. Noticed on the snowbanks were two bears feasting on grasshoppers numbed by the cold. On the western branch of the St. Vrain the party was out of grub and they rested for the night. The men hiked to Mt. McHenry where a hearty breakfast was made. The two Powell’s, Sumner, Byers, and Farrell, returned to the springs on August 25^th. Keplinger and Garman remained to record high altitude weather. Submitting the first mountain climate observations to the Smithsonian Institute. 

The First Recorded Ascent of Long’s Peak (with a lengthy caption) was published in the Rocky Mountain News by William N. Byers on September 1, 1868. Proud of the fact, “that all were eminently successful and satisfied; the more so because the mountain had always before been pronounced inaccessible, and ours was the first party that had set foot on its summit.” 

The Three Lakes area encompasses the north-east corner of Grand County and is so named because of the three connected lakes of Grand Lake, Shadow Mountain Reservoir and Granby Reservoir. 

The two reservoirs were formed as a part of the Colorado-Big Thompson Project, which takes water from Grand Lake on the western side of the Continental Divide to the Big Thompson River on the east.  Shadow Mountain Reservoir and Granby Reservoir. connected by a   unique pumping plant, assure that the Grand Lake water level remains consistent. Further reservoirs were added in the Three Lakes area, including the Willow Creek and Windy Gap Reservoirs.

Onahu Creek was called Fish Creek and is a tributary of the North Fork of the Colorado River. The name refers to one of the Indian race horses who came up to a campfire to warm himself, and the name means “warms himself“.  The horse ultimately died on Fish Creek and gave his name to the waterway.