Wanted Burrell drawings
 

Just wondering if any one can help with the following drawings I'm looking for for a project in its early stages for a 7 1/4 ton Burrell tractor, 4057. I have spoken to the Road locomotive society and MERL but these are missing so far. Most I believe to be small parts and can be copied from other engines I expect but if drawings are out there I would be grateful of a copy and happy to pay for them. They are Z1200/ Z1201/ R54/ R46/ SK1220/ 1461/ NO3588/ SK1279/ SK1452/ SK1224/ SK1153 so far, I'm sure I may need a few more as well. Thanks