SOURCE: "The Bronze Genius", in The Man Behind Doc Savage, Robert Weinberg, 1974, pp. 9-14.

In the following essay, Murray discusses Doc Savage's many fantastic gadgets, inventions, and vehicles.

Bronze was Doc Savage's symbol. Bronze because his skin had been kilned to a metallic hue by tropic suns and arctic winds; but also it denoted his forte, science. For bronze was the first alloy, its creation the first dabbling into science attempted by early man, heralding the Bronze Age and the end of the Stone Age. Just as Doc Savage alloyed science and human courage to end the Age of Menace.

Out of The Wizard's Den of his 86th floor headquarters or the secret Fortress of Solitude laboratory came literally hundreds of inventions, devices, gadgets and scientific discoveries applicable to every phase of human existence—medicine, aviation, warfare, agriculture and most notably, crime-fighting.

For most of his adventurous career...