In 1945 the new owners of the Mt.Washington, Carl and Byron Hedblom, commissioned the General Ship and Engine Works of East Boston, Massachusetts, of which they were principal owners, to build the MV Sophie C, named after the owner’s mother. She was launched in Center Harbor, New Hampshire, in August 1945 with the sole purpose of a shuttle service between The Weirs and Wolfeboro before the return of the MV Mount Washington to service.
The vessel is 76 feet long with a 16-foot beam and has a capacity of 150 passengers. Constructed entirely of steel, making her fully fireproof. Outfitted with diesel engines and is capable of traveling 15 miles per hour. It is presently owned and operated by Winnipesaukee Flagship Corporation of Weirs Beach and Center Harbor, New Hampshire.
In 1969 the Sophie C took over the mail service on Lake Winnipesaukee from Uncle Sam II.
http://www.winnipesaukee.com/forums/...2036#post12036
Sophic C photos:
http://www.winnipesaukee.com/photopo...=18&y=8&limit=
Sources of information;
Farewell Old Mount Washington by Edward H. Blackstone
The Boats and Port of Lake Winnipesaukee by Bruce D. Heald
Follow the Mount by Bruce D. Heald
Check out this audio:
http://www.nhpr.org/node/4938
Of course you have already seen this link:
http://www.cruisenh.com/2005/highres...e/vessels.html
Farewell Old Mount Washington is a must read for any lake history lover. It's one of my favorites.

Good luck!
PS: We haven't seen any of your other articles.