Now this is something I haven't seen before: an Etsy shop selling PDFs for vintage furniture plans. For $3, they'll email you all the instructions for making your very own MCM side chairor folding lawn chair. Sounds like a good deal to me. The shop is mostly made up of crocheting and knitting plans, but it might be worth it to keep an eye on them for more MCM furniture goodness.
MCM Furniture Plans available from Cemetarian La Dolce Vintage: $3