Yep.
I always felt that this era of H0 was the best: maybe because that's when I got started. To my mind you just couldn't beat these and others (Silver Streak, pre-plastic Mantua, Ulrich, etc.) for superior printing, free-standing details, durability (metal, after all). Sure, you had to build 'em, but that's what I liked doing.
Remember the Walther's annual "H0 Railroad Catalog & 'Craft Train' Reference Manual" of those times; a large portion of it was dedicated to parts and details, as well as all those wonderful structure kits.
Very much like post -war Lionel and Flyer, parts were always available, as were matching paints, trucks (think Central Valley), and I think the Kadee type you mentioned were number 58(?); an H0 version of their 0 scale coupler. I'll have to double-check on that.
Mark in Oregon