http://web.me.com/lllanducci/EAA-138...ber%202009.pdf
Here is an interesting reference to Pluswood by the son/grandson of the company owners in which he states that: "At the start of WWII, the Government hired our Company, along with the others mentioned in the previous articles, to manufacture plywood for the British " Mosquito " bomber. Our Company shipped over 1000 train car loads of special, high strength plywood to England."
Here is another article from the same source:
http://web.me.com/lllanducci/EAA-138...uly%202009.pdf States that Pluswood provided 35% of the plywood for the British built Mosquito and Roddis provided the rest. It also states that Roddis provided the plywood for the Canadian build.