It appears that it may be more discriminatory than even you perceive, FlightlessParrot, if it allows access to Canadians but not Kiwis! However I'm glad that you got there in the end. You might also want to take a look at
https://archives.imeche.org/archive/...t-de-bolotoff? (which, hopefully, will be easier of access). I think those photographs must be a relatively recent donation to the Institution of Mechanical Engineers because I didn't come across them when I was researching this subject a few years back.