Afterimage Optical Illusions

Both of these antique optical illusions will trick your eyes into seeing a ghost-like floating head. Read the instructions for each and you will be "seeing things" in no time.

Optical Illusion #1 - Yorick's Skull

 

Optical Illusion #2 - Mystery Picture

This is a puzzle as well as an optical illusion. You must determine the identity of the famous American pilot who is being portrayed. Due to the age of this optical illusion (circa 1920's), a history book may be helpful.