Historic Preservation in Action: 3D Laser Scanning

Jascin N. Leonardo Finger • August 12, 2013

Since the end of July, the Preservation Institute Nantucket (PIN – they have removed the colon in their abbreviation!), has been conducting 3D laser scanning of the MMA’s historic properties. This laser scanning technology allows for the quick and accurate recording of a historic building’s physical design and condition. Such a process also allows for the creation of black and white line drawings; photo-realistic plans, sections, and elevations; video walkthroughs of the building and site; and virtual databases for organizing and displaying archival, existing conditions, and other information. This is an incredible resource and opportunity to document our island’s historic structures and built environment. The PIN project has been funded in part by the Nantucket Community Preservation Act.


It has been fun to observe the ongoing work and we held a demonstration for the public on July 31st on Vestal Street co-hosted with PIN and Nantucket Preservation Trust which was well received. PIN demonstrated how the scanning is completed and the product and end results which are quite remarkable. PIN has been using the Mitchell House as a classroom for its students for many years and has also included other of our historic properties at the MMA. They just wrapped up their work here on Vestal Street and they have already completed working on the Washington Street sites, the future home of the MMA’s new science center.


PIN has also completed this work on the Boston-Higginbotham House and will be working to scan street views in Town and Sconset over the next few years. They will return this winter to work on Main Street so keep an eye out for them.


We thank PIN, including its co-directors Marty Hylton and Linda Stevenson, as well as the graduate students working on the scanning project for their time and hard work. This is yet another wonderful collaboration with PIN and a boon for Mitchell House as we receive this extensive scanning and all of its data cost-free. Thank you!!


JNLF

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Maria Mitchell In Her Own Words

By Jascin N. Leonardo Finger • July 6, 2026
July 15. {1863} My dear Sally . . . I think Mitchell is all right in his algebra. He can’t stand an examination in Trig but I don’t believe he will have a rigorous one. Father has seen the Prof. and will give him a letter to them.  If you can’t be honest with your sibling, who can you be honest with? Apparently, Sally Mitchell Barney’s son, William Mitchell Barney – known as Mitchell as his cousin William Mitchell Barney was known as Willie (how is that for honoring your father?!) – was visiting his aunt Maria and his grandfather, William Mitchell, at their home in Lynn, MA. Sally still lived on Nantucket and I suspect Mitchell was not only visiting but getting some much needed help with his mathematics by his aunt Maria. As always, she is brutally honest – he won’t pass a test in trigonometry (but, neither would I!). JNLF

Top O’ the Ridge!

By Jascin N. Leonardo Finger • June 29, 2026
In April and early May, at long last, the Mitchell House roof was replaced. (I noted this in an earlier blog.) I had also noted that the roofwalk, given the condition it was in and its location – sitting on the ridge – had to be replaced. They had thought they could jack it up – as they have done with other walks – but the Blizzard of February 2026 that was ALL wind (83 MPH winds – read Category 1 Hurricane) and no real snow, made the walk impossible to treat in such a manner (read: crumble). So, after much discussion, review by our preservation easement holder, and permits, as well as some fundraising, we are replacing the roofwalk. The prior walk was not the original. The original blew off in a gale in the late nineteenth century, replaced at some point in the 1930s, and likely replaced again in the 1960s or 1970s. Then, since that time, it was heavily repaired. Its framing members were notched to accept the ridge boards (read: peak) of the roof and I think that may have been an original way to construct a walk. Makes perfect sense – and gives the walk more support and a lower profile. It was after all about putting out chimney fires and preventing roof fires. People copied what worked – and there have been a few others noted to be built in this manner still. It presents an issue though – because if you need to work on the ridge board or close to it – you cannot get to it easily – I guess you may be able to access it to some extent by lifting the deck boards of the walk. The new Mitchell House roofwalk will sit about six inches above the ridge – which will also allow air to circulate better over the ridge and the shakes in that area. That is the only thing that will really be different. It is protected by a preservation easement – as part of the Mitchell House’s easement – and frankly, even if we did not have an easement, we would not want it to look any different. So keep your eyes to the skies at 1 Vestal as we work to re-build the walk. With a special thank you to Barber and Sons and Lydon and Sons. JNLF

Maria Mitchell In Her Own Words

By Jascin N. Leonardo Finger • June 22, 2026
1875, June 20. A meeting of the Officers of Congress was called at the house of Mrs. Hanaford, 5 Summit Ave., Jersey City. The weather was intensely cold. I went to New York on the 19 th and stopped with my friend Mrs. Clapp, 100 W. 54 St . . . .It was a question who should preside. Mrs. Hanaford thought the Chairman of the Executive Committee should and I had been told that I should, etc. The question was decided by the non-arrival of the Chairman of Ex.Com. I called them to order at an hour after the time appointed. Of course I made many blunders, as I have never presided before, but I continued for 4 hours. We did a few good things . . . The thing most weighing on Maria’s mind at this meeting was the looseness of membership for the Congress. She felt people were not being vetted properly in some areas of the country and thus they may allow in “undesirables.” I would take this to mean women who were not entirely behind the cause of the Congress and the Association for the Advancement of Women. I am not surprised by her suspicions and likely she was correct – one could see naysayers gaining access to this group and trying to destroy it from the inside. The women’s rights movement would have many schisms within it as people disagreed and broke into smaller factions.  Another important thing to point out is that Mrs. Hanaford is Nantucket-born Phebe Coffin Hanaford. Raised a Quaker, like Maria, Coffin Hanaford would become the first woman Universalist minister in New England – among many other firsts. She grew up with Maria, attended and taught at the Coffin School here on Nantucket, and was a founding member of another women’s organization, Sorosis, which Maria was also a founding member of. It’s nice to see two sister Nantucketers continuing to work together as adults – far from home! JNLF
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