I just have seen again my pics previously uploaded to my overalls blog. Definitely worth also showing here. Pic 1 from a 1978 Montgomery catalogue. Both taken from a flickr album from “wishbook” (cc-by-nc-sa). Click for high-res.
3 young boys in different western-style clothes. Jeans, bib overalls and jeans with chaps.
Pic 2 coming from an 1981 Montgomery Ward catalogue.