Now, we get a very different list of map types than what have appeared in the previous windows. Understand that this list may be different for different states or counties, though many or most of the choices should be present for most counties. For more information about map formats, check GeoComm About GIS Data. Geologic shows geological information. MAY be able use this format.
Transportation shows roads, railroads, etc.
These maps are often from the state highway department so the format may vary from state to state. 24K are also the same scale as the 7.5 minute topographic maps. In states checked, there are only a few of these for any county. 24K is finally one we can use. These ARE the familiar 7.5 minute topographic maps.