1881 letter from the law firm of Fox & Kellogg in San Francisco, California, to merchant and lumberman Freeman Hale Todd in Calais, Maine.
From brief online research, hopefully correct - corrections and additions requested:
F. H. Todd was presumably Freeman Hale Todd (1809-1885), son of William Todd and Hannah (Worthley) Todd, and husband of Hasadiah U. (Grant) Todd and Adeline (Boardman) Todd.
F. W. Pike - there are many references to a Fred A. Pike but I didn't find a F. W. Pike in Calais, Maine, or St. Stephen, New Brunswick, not that there wasn't one. Perhaps F. W. Pike lived out of the area.
If you have corrections and/or information to share, please leave a comment for the benefit of other researchers.