Faraday to Charles Joseph Hullmandel   12 April 1827¹

Royal Institution, | April 12, 1827.

Dear Sir,

In reply to your request, I have no hesitation in stating, for the information of all whom it may concern, that having been made acquainted with, and having witnessed your method, and other methods of preparing Lithographic Drawings, I know yours to be strikingly peculiar and different from the others, and from a consideration of the chemical principles of the art, should expect your process to possess that superiority which the testimony of Artists, competent to judge, assure me that it has.

I am, dear Sir, truly yours, | M. FARADAY

To Mr. Hullmandel.