The datasheet is the document describing the technical details of a survey ["control"] point. The datasheet is provided by the ["NGS"] for public use, and it contains details regarding the measured characteristics of the point, as well as description of its condition.
NGS datasheets can be obtained at the [http://www.ngs.noaa.gov/cgi-bin/datasheet.prl NGS Datasheet Page]. Click on "DATASHEETS" to get a datasheet for one PID or a set of datasheets for a list of PIDs in a text file on your computer. Click on "ARCHIVED DATASHEETS" and then "YEARLY ARCHIVES" to get datasheet files by county.
The parts of an NGS datasheet are explained in the [http://www.ngs.noaa.gov/cgi-bin/showdoc.prl?Doc=dsdata.txt NGS Documentation File].