: The Wooden Boat Magazine sells study plans for very little,
: including several older designs like the Haven 12-1/2 which may
: be suitable for model building.

Oops! I forgot to add the links:

Store with links to various plans http://www.woodenboatstore.com/category/plans:_boatbuilding
Half models at http://www.woodenboatstore.com/category/plans:_half_hull_models/a

Study plans are pdf files which you download after paying with a credit card, I found a list here
http://www.woodenboatstore.com/category/s/a

- if you have a problem finding that page enter “study plans” in the search tool; there are lots of them so the page may take a few seconds to show! About half of the ones listed had a study plan price of $0.99