NGSCS Radial Search creates a Google Earth network link that plots the approximate location of NGS control stations within a specified distance of the view center. Requires Google Earth Version 4.3 or later.

“According to a DoL summary analysis provided to Geospatial Solutions, today’s $5 billion market for geospatial technologies is set to explode to $30 billion in just a year.”

“It is not just about locating things or people anymore; some proponents believe that GPS could become a total jobsite management tool.”

CADD Standards for AEC developed by The Army Corps Of Engineers

free Java-based GIS tools

‘This process is designed to provide the datum shift between the NAVD 88 and NGVD 29 vertical datums at a specified geographic position’

old (2001) slideshow with some good information on NGVD, &c.