Third-party companies like popularized the use of these maps on CDs through products like the TOPO! Seamless USGS Topographic Maps series.
Based on maps produced by the U.S. Geological Survey. Includes full-state coverage for California. GPS ready. topoView | USGS - National Geologic Map Database clinton county iowa usgs topographic maps on cds
By 2006, the USGS ceased traditional lithographic (paper) printing methods. The role of the physical CD-ROM was eventually superseded by the . Third-party companies like popularized the use of these
In the mid-1990s, the USGS began creating —scanned, georeferenced versions of their famous paper topographic maps. These digital files included all the original map "collar" information, such as legend data and scale bars. For a place like Clinton County, these CDs allowed users to see historical 1953 or 1967 quadrangles on their early home computers for the first time. 2. Commercial "Topo!" Software Geological Survey
: The digital collection now spans from the earliest surveys in 1884 to the final paper-style maps of 2006, including various scales like 1:24,000 and 1:125,000. Local Geography Snapshot
: Unlike paper maps that "ended" at the edge of the sheet, these CDs allowed users to scroll across county lines effortlessly.
The "story" of is a tale of the transition from paper to digital mapping during the late 20th century . Before high-speed internet allowed for instant downloads, CD-ROMs were the primary way for researchers and outdoor enthusiasts to access massive geospatial datasets. 1. The Era of Digital Raster Graphics (DRGs)