MDC / Roundhouse / Piko / Mainline America (remember: links to sub-pages at the bottom of this page) click to jump to the bottom MDC: The original company was MDC (Model Die Casting) but some was also sold under the Roundhouse name. Most of the products were 1:32, but they had a larger scale "bobber" caboose which Matt D. reports to be very close to 1:24. MDC is out of business. Mainline America: (owned by Midwest Companies Inc) There was nothing heard for a while, then a new company in the US claimed to have the molds. They had some parts, but no new product. The complete story is that they were going to work with Athearn to produce the product, but somehow the molds got sold to another company, and that company went away and PIKO ended up with the molds. My personal guess is that PIKO came in later and offered a sweeter deal. Too bad. So Mainline America has the rest of the MDC inventory, and was selling some of the products, from original stock and some new parts, notably wheels are made of a much superior plastic (the old MDC stuff could literally "melt" in the heat) with stainless steel axles. The had a number of plans and had produced some improved details too. I had some communication with Joseph Novosel in 2009, who indicated they intended to get the tooling, but they intended to produce new tooling. They had a large inventory of speeder parts, and intended to revive them, new tooling, motors, etc. They also had parts for the Hustler loco, boxcars, reefers, hoppers, etc. I contacted him again in 2010, and they failed to get a motor supplier for the speeders. They were still selling parts. No communication since then. Piko: So Piko bought the molds, and are producing some of the cars again. I heard the "bobber" caboose has been re-issued as pretty much the same as the MDC version, although it no longer has arch bar trucks.Their web site does not list the caboose separately, but you can see it in the G scale starter sets. They also show a drovers type caboose, which looks the same as the"bobber" without a cupola. The shorty ore cars (jennys) are there, but look a little different, maybe just a poor picture on the site. There is a 40' reefer and a 40' box car. Nothing on production of the excellent 2 bay hoppers MDC had. Conclusion: We shall see what lies in store for this line of nicely detailed, well scaled products. It's not clear if Piko will improve or upgrade anything, since they are selling these American prototypes in Europe. Mainline America seems to be gone.