Penelope Pelham West 
London Letters Home (1861-1865) of an American Apprentice Preparing for the Far East Tea Trade, Gus Farley Jr. (1844-1899) [PDF ebook] 

"London Letters…" presents family letters and other original family materials in their historical and social context on both sides of the Atlantic. We see, through the eyes of a young American, his entry into the business culture of Dickens’ London and learn about the life and leisure of an apprentice tea-taster at the time.