Information needed regarding RR Merlin packing crates

Does anyone have any information on the crates that Rolls Royce Merlin engines were packed and shipped in?

I’m looking out for accurate schematics, photographs and details of what materials would be used to construct the crate for a project I’m looking at putting together.

Also of great help would be any pictures of any markings on the crate.

Can anyone help me out please?

Regards,

Paul