Sparrell is a fairly rare last name so I google seach it occasionally and search on various sites. On ebay I ran across an envelope from "Hayes, Sparrell & Co." to A.J. Ives, Brandon, VT postmarked in Boston, MA on Jun 3, 1901 (back when it cost 2 cents to mail a letter). The return address is:
Haynes, Sparrell & Co. 301 Congress St. Boston, Massachusetts
How do I find out more about this company and which Sparrell is on the masthead?