Decent Higgins Boat plans avail.
The Louisiana State Library has been busy adding all sorts of information to the digital datbase and state files. One set of plans and information I found was on the Andrew Higgins Landing Craft. Here is the link to the main State library archive and the direct link to the Higgins Boat Enjoy.
State Archive Main Page
http://louisdl.louislibraries.org/collections.html
Scroll down and take a look at many different collections. Once you open a link, scroll down some more until you reach the "Browse collection by images" Click on that and it will alphabetize the listings under each title, super simple to us.
Higgins boat
http://louisdl.louislibraries.org/cgi-bin/browseresults.exe?&CISORESTMP=/site-templates/browse_results.html&CISOVIEWTMP=/site-templates/item_viewer.html&CISOMODE=grid&CISOGRID=thumbnail,A,1;title,A,1;subjec,A,0;descri,200,0;0,A,0;50&CISOBIB=title,A,1,N;subjec,A,0,N;descri,K,0,N;0,A,0,N;0,A,0,N;50&CISOTHUMB=6,5&CISOTITLE=100&CISOROOT1=/HIC
Jake