A Lady's Life in the Rocky Mountains is a travel book by British traveler Isabella Bird, recounting her 1873 excursion to the Rocky Mountains of Colorado, on the border of the US. The book is a collection of letters that Bird wrote to her sister, Henrietta, and was published in 1879 by John Murray. In 1872, Isabella Bird left England and went first to Australia, then to Hawaii, and then to the Sandwich Islands. Later that day, she sailed for the US, cutting back at San Francisco. She passed Lake Tahoe, Cheyenne, Wyoming, Estes Park, Colorado, and somewhere else in and close to the Rocky Mountains of the Colorado Region. Her aide was Rough Mountain Jim, portrayed as a desperate person, with whom she got along very well. She was the first white woman to stand on top of Longs Peak, Colorado. It was later found out that Jim was shot to death after seven months. After facing so many adventures, Isabella Bird ultimately took a train to the east.