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42 Rutland Gate, S.W.
Dear Captain Smith
You are most obliging & helpful. Let me suggest in addition (if not too late) a white streak down the line of the shoulder & possibly elsewhere.
I am making a little, optical instrument that promises to act very well, to standardise colour. Could you manage conveniently
to get me a few snips of hair, ches:t bay, brown & black, and of 2 or 3 shades of each, for me to mount experimentally[.] As much of the whole lot as could be stuffed into a common envelope, would suffice.
Very faithfully yours