Battle of the Titans: Edison's Letterhead vs. Tesla's

A way cool site, Letterheady. Start at Popular or Archive.
HT: Salmon:

The Laboratory of Thomas A. Edison,

1923 | Source.  

The suitably incredible business letterhead of Nikola Tesla, 

circa 1900. Inventions featured, clockwise from top-left: 

Oscillation Transformer, Telautomaton 

(wireless, remote-controlled devices; pictured is a 

remotely-operated boat, showcased in 1898), 

Steam & Gas Turbine,Induction Motor. 

Centre: Wardenclyffe Tower (never completed).