I watched the original "Cheaper By The Dozen " (1950) recently and it showed a lighthouse- actually 2 lighthouses- that were part of a cottage that the Gilbreath family stayed at on Nantucket Island in the 20's.

The depiction in the movie looked like photos I saw in January of the Three sisters lighthouses in Eastham, MA when they were part of a cottage. It was located just down the road from where the lighthouses are presently situated.

I did find a photo of what the Gilbreths' called "The Shoe" on Nantucket. Here's a link to the photo- scroll down it's the 3rd photo.

http://cheaperbelles.tripod.com/photos.html

I've sent an e-mail to Jeremy D'Etremont to see if he has any more info on it.

Dennis