: Today, you no longer need a CD drive. You can download georeferenced files for Clinton County for free via tools like USGS topoView .
: Unlike paper maps that "ended" at the edge of the sheet, these CDs allowed users to scroll across county lines effortlessly. 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 The role of the physical CD-ROM was eventually superseded by the . : Today, you no longer need a CD drive
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 By 2006, the USGS ceased traditional lithographic (paper)