Julia Thomas (c. 1862–1917) was a pivotal figure in the enduring legend of the Lost Dutchman’s Mine, a tale of hidden gold in Arizona’s Superstition Mountains, inextricably linked to the German prospector Jacob Waltz (c. 1810–1891). While Thomas’s life intersected with Waltz’s during his final days, her role in popularizing the myth of his lost mine cemented her place in American frontier history. This biography explores her life, her connection to Waltz, and her contributions to the legend, drawing on historical accounts while acknowledging the speculative nature of some details.
Early Life and Background
Little is documented about Julia Thomas’s early life, but historical records indicate she was born around 1862, possibly in the United States, and was described as a woman of mixed racial heritage, sometimes referred to as a “quadroon” in contemporary accounts. By the late 1880s, she had settled in Phoenix, Arizona Territory, where she operated a bakery and confectionery shop. This business was her primary source of income, and as a woman proprietor in the late 19th century—particularly one of color—she stood out as an uncommonly independent figure in a male-dominated, racially stratified society.
By 1891, Thomas was navigating personal challenges, including a divorce, which likely strained her financial stability. Her bakery, while a testament to her entrepreneurial spirit, was not enough to shield her from the economic precarity of the time. It was in this context that her path crossed with Jacob Waltz, a reclusive German immigrant and prospector whose reputed discovery of a rich gold mine would define Thomas’s legacy.
Connection to Jacob Waltz

Jacob Waltz, often called the “Dutchman” (a misnomer derived from “Deutsch,” meaning German), was a prospector who arrived in Arizona in the 1860s. By the 1870s, he was known for periodically appearing in Phoenix with high-grade gold ore, the source of which he guarded jealously. In February 1891, a devastating flood along the Salt River destroyed Waltz’s homestead, leaving the aging prospector (then in his early 80s) destitute and ill, likely with pneumonia.
Thomas, described as a friend or acquaintance of Waltz, took him into her home and nursed him for several months. Some accounts suggest she was motivated by compassion, while others speculate she saw an opportunity to secure payment for his care, possibly through his rumored wealth. Waltz died on October 25, 1891, in Thomas’s home, an event that marked a turning point in her life and sparked the legend of the Lost Dutchman’s Mine.
Two conflicting narratives emerged about Waltz’s final days. According to Thomas, Waltz confided in her about the location of his mine, providing directions and possibly helping her draw a map. She claimed he intended for her to have a box of gold ore stored under his bed as payment for her care. However, Dick Holmes, a Phoenix local who was present on the night of Waltz’s death, asserted that Waltz gave him the gold and detailed directions to the mine during a deathbed confession. The dispute over the gold—reportedly 48 pounds of rich ore—and the mine’s location created a rift that fueled decades of debate among treasure hunters.
The Expedition and the Birth of a Legend

Following Waltz’s death, Thomas acted swiftly to capitalize on his story. In 1892, she partnered with Rhinehart and Herman Petrasch, two German immigrant brothers, to search for the mine in the Superstition Mountains. At 29 years old, Thomas was an unlikely expedition leader, given the era’s gender norms and the rugged terrain of the Superstitions. The trio embarked in mid-July, a perilous time due to the desert’s extreme heat. The expedition was a failure, yielding no trace of the mine and nearly costing them their lives. Financially ruined, Thomas parted ways with the Petrasch brothers and never attempted another search.
Undeterred by her failure, Thomas leveraged the mystique of Waltz’s mine to sustain herself. She began selling maps purportedly based on Waltz’s directions for $8 each, a significant sum at the time. Her account of the expedition was published in the Arizona Weekly Gazette, and she likely provided information to journalist Pierpont C. Bicknell, whose articles in the San Francisco Chronicle brought national attention to the Lost Dutchman’s Mine. Thomas’s maps and stories, while criticized as embellished or fabricated by some, laid the foundation for the legend’s enduring appeal. Her entrepreneurial flair for publicity—whether intentional or opportunistic—transformed a local tale into a national obsession, inspiring countless treasure hunters and shaping the mythos of the American West.
Later Life and Legacy
In July 1893, Thomas remarried, wedding Albert Schaefer. The couple became known in Phoenix for eccentric behavior, including ritualistic burnt offerings in their front yard, which some accounts describe as cult-like. These practices may have reflected personal beliefs or an attempt to maintain public attention, but they further distanced Thomas from mainstream society.
Thomas’s financial situation never recovered from the failed expedition. She spent her later years in poverty, a stark contrast to the wealth she sought in the Superstitions. On December 15, 1917, she died of Bright’s disease (a kidney ailment) at age 55. Ironically, the route of her 1892 expedition passed over the sites of the Mammoth and Black Queen mines, two of Arizona’s richest gold deposits, discovered shortly after her search.
Historical Significance and Critical Perspective
Julia Thomas’s role in the Lost Dutchman’s Mine legend is both celebrated and scrutinized. To some, she was a savvy opportunist who amplified a dying man’s tale for profit, possibly fabricating details to cover unpaid debts or capitalize on Waltz’s reputation. Others view her as a victim of circumstance, a woman whose limited options in a patriarchal society led her to pursue a risky venture that ultimately failed. Her status as a woman of color adds complexity to her story, as her independence and visibility in Phoenix were remarkable for the time, yet likely contributed to her marginalization.
The veracity of Waltz’s mine remains debated. Some argue the Superstition Mountains, being igneous, lack significant gold deposits, suggesting Waltz’s ore came from elsewhere, possibly California or Colorado. Others, citing Waltz’s documented sales of gold to the U.S. Mint, believe the mine existed, though its location may have been a cache rather than a traditional vein. Thomas’s maps and stories, while influential, are often dismissed as unreliable, yet they reflect her agency in shaping a narrative that has outlived her.
Julia Thomas died penniless, but her legacy endures in the lore of the Lost Dutchman’s Mine. Her actions—nursing Waltz, leading an expedition, and selling maps—transformed a prospector’s secret into a cultural phenomenon. The Superstition Mountains, now part of Lost Dutchman State Park, draw thousands annually, many inspired by the tale Thomas helped create. Her life, marked by resilience and ambition, embodies the entrepreneurial spirit and harsh realities of the American frontier, forever tied to the enigmatic Jacob Waltz and his elusive gold.
Further Reading
![]() The Curse of the Dutchman’s Gold by Helen CorbinThe Curse of the Dutchman's Gold by Helen Corbin Helen Corbin's The Curse of the Dutchman's Gold is the first book I have read on… |