July 1977: Rockwell Collins Receives 'World's First' GPS Satellite Signal - Avionics International
First Map-Based Car Navigation System Debuted 14 Years Before GPS - IEEE Spectrum
Satellite navigation device - Wikipedia
Who invented the GPS? People behind the Global Positioning System - Geoawesomeness
When Was GPS Invented for Phones? Exploring the Milestones Behind Its Invention - The Enlightened Mindset
Before GPS and Geocaching Existed: Three Navigation Systems – Official Blog
When Was GPS Invented for Phones? Exploring the Milestones Behind Its Invention - The Enlightened Mindset
The GPS a great invention by Mathura Arumugam on Prezi Next
A brief History of GPS In-Car Navigation - NDrive
7 great government-backed inventions - GPS (3) - CNNMoney
GPS and Other Invented Mothers - SpokaneFāVS
GPS equipment, 1989 – Modern mapping and surveying – Te Ara Encyclopedia of New Zealand
Garmin nuvi® 500 Portable navigator with topographic maps at Crutchfield
File:NDrive GPS.jpg - Wikimedia Commons
Global Positioning System History | NASA
A brief History of GPS In-Car Navigation - NDrive
Part 1: The Origins of GPS, and the Pioneers Who Launched the System - GPS World
A brief History of GPS In-Car Navigation - NDrive
Top Suppliers of Global Positioning Systems (GPS) in the US and Canada
What is GPS? | Garmin
When Was GPS Invented & Who Is in Charge of It? | MyBaseGuide
Did a Movie Star Lead the Invention of GPS?
Global Positioning System - Wikipedia
A brief History of GPS In-Car Navigation - NDrive
