Possible Clues:

• ___ McNally (GPS maker)
• McNally with the maps
• Ayn who wrote "Atlas Shrugged"
• Ghostwriter of 'The Fountainhead'?
• Sovereign, as well as foreign coin
• Coin with a springbok
• "Anthem" writer
• Writer who founded Objectivism
• McNally's partner in maps
• The South African currency