Part works (partworks?)

Ansty's request re the cookery book reminded me of the popularity of part works in the 70's. I remember a brilliant one on knitting and sewing, including patterns, instructions which I dutifully collected, filed in the binders and (you will be surprised) actually made a few things which all turned out really well. I am sure it was Marshall & Cavendish series. I also got and enjoyed Supercook. Of course i have long since taken all my bound copies to the charity shop and so wish I hadn't! For novelty value if nothing else!
But part works were very popular weren't they? - Or was it just me?