This restaurant, based out of San Francisco was the first of four locations in Houston. All of the restaurants were train-themed, and this location opened in late 1972.
There were listings of this restaurant in 1974 and 1977 Texas Monthly magazines. Here's a bit from a 1977 review: "Getting boxed in is what it's all about here. Climb aboard for reasonably reliable fare—prime ribs, steaks, and a salad bar—for a reasonable fare", with another location at 7807 Kirby. The other location later would serve as Droubi's Bakery until around 2007 when it was later torn down. Note that the 3015 South Post Oak Road date is historic, today it would be 3015 Post Oak Boulevard today. Additionally, a 1983 ad mentions locations at 255 Greens Road (now a McDonald's) and 1111 Dairy Ashford, which later was torn down for a Ryan's, and that was torn down later for a Freddy's Frozen Custard.
In November 1985, the South Post Oak store closed, and by the time Victoria Station filed for bankruptcy in May 1986, all four had closed. The Post Oak location was torn down by 1989, though the parking lot survived in some form or another until the early 2010s.