Massey Harris Tractors

[bob kenny]

Hi I am not sure whether this is the correct forum to raise this one but here goes.
I am very interested in gaining information regarding Massey Harris model 80 & 81 tractors which were used by the Royal Canadian Airforce to tow Lancaster Bombers during WW11. Specificly I am hoping to get info on any mods made to the tractors as well as any other info but more importantly would like to get hold of photos showing detail including colour and markings etc.
Thanks & Best Regards Bob Kenny