contains a meticulous and accurate relief map of the Grand Canyon which Egloffstein produced on the trip. It was not until 2001 that an explanation for the discrepancies began to be developed: Jeremy Miller, viewing Egloffstein's Black Cañon in a New York exhibition, recognized it not as a portion of the Grand Canyon, but as part of the Gunnison River in present-day Colorado. He found the topographical map of that area which Egloffstein had produced for the Gunnison expedition, and noted that what is now called the Gunnison River was marked "Grand River" thereon. He found another Egloffstein work, View Showing the Formation of the Cañon of the Grand River, which had been produced during the Gunnison expedition. He then traveled to the Gunnison River and located sites which duplicated the vistas shown in the Egloffstein engravings of the nineteenth century. It is now presumed that Congressional staffers working on the 1861 Grand Canyon report misfiled the Egloffstein works, assuming that his "Grand Caňon" engravings must refer to The Grand Canyon expedition. Civil War In 1861 Egloffstein, who had moved to New York City, helped organize what became the 103rd New York Volunteer Infantry, of which he was elected colonel. His American military career was quickly ended by his serious wounding in late April 1862, in North Carolina, although he did not resign his commission until late 1863. He was granted a brevet commission as a brigadier general in 1865. During the Civil War he produced a large map in his contoured style showing the Four Corners region for a report that was only published decades later. It shows paths of all major explorations in the region up to that time. In 1864 he would publish a study of the mineral resources of the state of México based on reports done in the 1820s by his long-term friend Baron Friedrich von Gerolt, Prussian Minister to the United States. His maps for this book are regarded as outstanding examples of half-tone and color map-making and display. Egloffstein patented a method for photographically creating half-tone printing plates, which he sought to exploit commercially in the 1860s and 1870s, but with little commercial success. He continued working as an engraver and maker of scale models until his departure from America in 1878. Return to Germany and death He would return to Germany in 1878, living in a house in Hosterwitz near Dresden, Kingdom