Hi all, Sorry if I'm posting this in the wrong place... For a little while I've been trying to find information in the Canadian archives about design adjustments made for the production of Canadian-built Valentine tanks. I just had a brainwave thanks to a poster on a Canadian forum and checked the UK National Archives site, and found that the Field Trial reports I was looking for are at Kew!!!! At least I know where they are now. That makes me think the Design Change Instructions and Design Deviation Permits might be there too but... searching for those phrases doesn't turn up anything. Anyone have any suggestions? edited PS: And I just found the cold weather test files at Library & Archives Canada! Yes!!