Who drew these

I apologise that these pics have nothing to do with aircraft. but think they may be of interest to members.
All four images are on one sheet of paper,(my scanner not big enough to do it complete) My father aquired these pics while training in the REME in Ripon Yorks around about 1944/45. but has no recollection who gave them to him or who drew them. I have never seen anything like these in any ww2 books and I’ve seen a few, have also sent copies to REME muesum they have no information on them either.
obviously the drawer was an engineer/draftsman with a sense of humour.