355H: YA book with puffins and an island (Solved!)

I read a book in the late 70s or early 80s.  I think it was a 60s/early 70s book, but that’s little more than a guess.
A few years later a children’s section librarian helped me find the book again and she knew exactly what I was talking about.  Whether that speaks to the popularity of the book, or the quality of the librarian I don’t know.  🙂
The story is a number of children having adventures on an island while their parents are busy.  Researchers I think?
Puffins are involved somehow, and I THINK that is part of the name, although whether it’s the name of the book or the island I’m not sure.
They get to the island via seaplane and I think there was a seaplane on the cover.
There were at least 2 books, maybe more.
Not much, I know.  🙂
It’s funny how strong the memory of loving the book is, yet so few details remain.

348P: Island Mystery

Main Character is a young woman hired to be a companion to a teen by the teen’s guardian. Takes place on an island that you have to take a ferry to the mainland. The teen goes missing and the guardian’s younger brother says she ran away and he cuts off his hand to cover up the murder scene. There is a scene where they make oatmeal by leaving it on the stove overnight. The companion starts to be attracted to the younger brother but discovers what he did.

348K: Fat girl runs away from home by taking canoe to an island and living in the forest

I think I read this in the 4th grade (I was born in 1979). This girl was really unhappy at home, so she took a boat and rowed away to an island. On the island she learned to fend for herself. She made a cozy home either in a kind of dug out, or a hollowed out tree. She survives the winter, and eventually returns home feeling much better about herself because she has lost weight and is independent.

345U: Virgin Islands young adult mystery (Solved!)

I am searching for a young adult mystery that was set in the Virgin Islands.  The protagonist, a young woman, receives a message from her father on an alphabet shell.  I think it was her father, who is a doctor, and who has been abandoned on an island.
Please help me.  This book was a seminal influence on my desire to live on islands. I now live in Manhattan.

338Y: Infant alone on an island

An infant survives a shipwreck and ends up on an island where he lives alone for a few years. Not certain what age he is when some people (grandfather maybe) come searching for him, but not being accustomed to people, he hides from them. The book makes a point of mentioning that the boy’s hair is very blond to almost white. I remember this was a very tiny book size-wise; smaller than the average book at the time.  It was a library book from the young adult/children’s section and I read it in the late 60’s early 70’s.

329W: Caribbean Island Adventures With Photos

I am looking for a book that I think my parents must have brought back from a Caribbean vacation in the 70s. It was the story of a bunch of island kids, boys and girls of different ages, maybe set in the Bahamas, or maybe not that specific, but definitely in the English-speaking Caribbean. Any adults were marginal background characters. There was a hand-drawn map of their island that showed beaches, caves, meeting places, shortcuts, etc. It was essentially a picture book, but scenes from the story were illustrated with black-and-white photographs of black children (actors? the author’s kids and neighbors?) and island scenes. The combination of an exciting adventure story with actual photography was wonderful.

243I: Isle of Capri (Solved)

Children’s fantasy book from the 50s, 60s or 70s, something about “the Isle of Capri”. I think the cover was basic – black and white, or dark green and white. Perhaps there was a butler and a big house…there was some sort of magic going on, I think. The Isle of Capri might have been spelled “Capris.”  I remember that a child goes to a big house, a mansion, to live and there are mysteries and strange things going on. That’s all I can remember!