I wasn't able to quickly find a pattern for this block, but this site has a good picture of the block and it looks like it's just made up of 4 half-square triangles that you could make any size you wanted. Maybe it will help just having a picture in order to make it without an actual pattern with instructions on what size to make the half-square triangles?
http://cgi.ebay.com/BARNEGAT-LIGHTHOUSE-PIECING-APPLIQUE-PATTERN_W0QQcmdZViewItemQQitemZ110188403175#ebayph otohosting