<engraved address>
4, Old Square,
Lincolns Inn.
Ap. 28th 1856
H. F. Talbot Esq
Dear Sir
I entertain a strong opinion that no person has a right, without your licence, to use Gelatine mixed with Bichromate of potash applied to a surface in the dark & then to take a picture by the Camera or otherwise by the aid of light and then to wash off by water the parts not acted on by light
Yours very truly
William Carpmael
Please cite as “TALBOT7257,” in Ɛpsilon: accessed on