‘thinking’ historical pictures (exact matches)

Madame de Lafayette, French author
Madame de Lafayette, French author
A message to my sweetheart
A message to my sweetheart
Beethoven's Piano Sonata No 14 (Moonlight Sonata)
Beethoven's Piano Sonata No 14 (Moonlight Sonata)
Mental Calculation, 1895
Mental Calculation, 1895
Boy thinking
Boy thinking
Arthur Conan Doyle's Sherlock Holmes and Doctor Watson
Arthur Conan Doyle's Sherlock Holmes and Doctor Watson
The Garden of Eden
The Garden of Eden
The theory of gravity: English scientist Isaac Newton watching apples fall from a tree, 17th Century
The theory of gravity: English scientist Isaac Newton watching apples fall from a tree, 17th Century