In what year were USGS Topo maps first published?

USGS Topo maps, created by the United States Geological Survey, were first published in 1884. This year marks the beginning of the systematic mapping of the United States, which aimed to provide detailed, reliable topographic information for various uses, including land management, scientific research, and recreational purposes. The establishment of these maps was crucial for understanding the geography of the United States, especially in the context of expansion and development during the late 19th century. The maps are known for their high level of detail and accuracy, which has been maintained and updated in subsequent editions over the years, and are still a vital resource for many professionals and outdoor enthusiasts today.