TALBOT6588

[headed notepaper:]
10. Pall. Mall. London.

Apl 5^th 1852

To
H F Talbot Esq^r

Sir –

I am requested by M^r Henneman to forward you 4oz of the Hypo Iodide of Silver – and which I think you will find the best preparation for taking portraits on glass – the time varies from 2 to 10 seconds but the temperature of the room in which the processes are conducted should not be less than 70º F.

Yours respectfully
Rich^d W Thomas