Glad you guys found the website interesting.
I've done a bit more research. Solid kits and/or plans occasionally pop up on Ebay. Books and magazines containing solid plans are occasionally found on Ebay as well and some, like the H.H. Gilmore books, can be found on Ebay or
www.abebooks.com.
A company called Propeller Models (
www.propellermodels.com) currently offers several solid display kits. None so far are of WWI planes. These kits have sanded and dried blocks and planks of mahogany, so the builder has his/her work cut out for him/her figuratively, but not literally. No "carved body, shaped wing." For those, consider some of Blackhawk's control line kits (
www.blackhawkmodels.kit).