These books were first published by Knight Books in 1971 in Britain, Australia, Canada, South Africa and New Zealand.
They were all printed in black and white and had approximately 90 pages in each. There were 8 books in total (only 5 of them are present on this page at the moment due to my inability to find the other three). Each page contains 2 rows of cartoons. The cartoons are also on sideways on the page
The books were translated by Anthea Bell and Derek Hockridge. The drawings on the front of the books (as far as I know) were drawn especially for them (I have never seen them used on anything else).
For anyone who has the french created Toutasterix book, I am sorry but you will not find these in it.