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When was the 1:24,000-scale topographic map series for the United States and its territories completed?

The U.S. Geological Survey (USGS) was created in 1879 and published it’s first topographic map in 1882. Systematic topographic mapping was authorized by Congress in 1884.

Although 1:24,000-scale topographic maps were produced by the USGS as early as 1904, a formal program to provide primary topographic map coverage at that scale for the entire conterminous United States did not begin until 1947.

More than 55,000 maps later, the USGS completed 1:24,000-scale coverage of the contiguous U.S. in 1992 (revisions were made until 2006). Alaska, Hawaii, Puerto Rico, and Trust Territories were completed earlier and were mapped at other scales. All of these maps are included in the Historical Topographic Map Collection.

Download free digital versions of historical USGS topographic maps (as well as more current US Topo maps) or order paper maps from the online USGS Store.

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