First, yes I am related to this family. The Andrew Stewart Messick who wrote this was my Great Uncle. His sister was my grandmother. My grandmother's mother was a Stewart and the Queen of Mardi Gras in the late 1890's. My great grandmother's father was Andrew Stewart who immigrated to the US from Liskey, Strabane, Ireland in 1848. He settled in Memphis, TN and married Josephine Pharr. Ultimately, 3 other of his brothers came to the US and together, they formed a very successful cotton factoring business based in New Orleans.
Second, I would really like to have a copy of the letter. An email attachment is fine. Let me know if you want to know more about this family.