During the last four or five years lamps with filaments made from tantalum and tungsten have been produced and placed on the market with great success, and are now largely used.
"Edison, His Life and Inventions"
Frank Lewis Dyer and Thomas Commerford Martin
There is no tantalum on Mars except a little scattered through tons of rock.
"Giants on the Earth"
Sterner St. Paul Meek
When the light is turned on and the little tantalum filament glows, it is ready for business.
"The Dream Doctor"
Arthur B. Reeve