This is something I did a WHILE back. It was from an outfit called Schomberg Scale Models. I don't think they are active anymore. This is their hydrocal Feed and Grain Mill. I liked it because it was an odd shaped building. I had been working part time in a train store after I retired. The owner gave me this kit because it had arrived in a lot of pieces. This was somewhere around a $100 kit. When I got done I felt kind of guilty so brought it back to the store. The owner had it sold in a few days. I was building only wood bridges and decking back then which he was kind enough to display in the store. This was pretty much my first non-wood structure. He then had me building other kits (mostly OGR) which he would advertise and sell over the internet. I branched out into plastic custom structures a year or so after this.
Joe