Doc Piloting his Gyro

Doc Savage was a master inventor (as was Lester Dent, the man who wrote
his adventures).  Consequently, he used an abundance of original gadgets
and inventions.  One of these was a portable "true gyrocopter," which Doc
is shown piloting in this piece.  Doc was featured in
Street & Smith's "Doc Savage" magazine.

"Doc Piloting his Gyro"
Ink on Paper, Digitally Colored