Hi
Found this franked envelope in a boxed lot. It is postmarked London, Amsterdam, and New York. Studying the envelope I am unable to determine the sender. The back of the envelope has what appears to be a crown. Don't know if that is simply a feature of a particular brand of envelopes used back in 1863 or something more significant. The envelope is addressed to a Surgeon at Sing Sing prison in New York named George J. Fisher, in care of Bailliere Brothers in NY, a publishing firm. Did some research on Google and found George J. Fisher wrote a number of medical books during his life and I guess this particular piece of correspondence must have pertained to that aspect of his life.

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