==External links==* Cornelis Drebbel (1572–1633)* Drebbel on Freebase* Cornelis Drebbel: inventor of the submarine* The Voynich Manuscript: Drebbel's lost notebook?
* Cornelis Drebbel (1572—1633)* Drebbel on Freebase* Cornelius Drebbel: inventor of the submarine* Drebbel Institute for Mechatronics: Who was Cornelis J. Drebbel?