SP's Zipper "Rider Coach"

In the 1940s and early 1950s, SP ran the Merchant’s Overnight Express (the “Zipper”) from Los Angeles to San Fransisco (and vice versa), Trains 373 and 374, usually with a Daylight GS-4, nominally 20 - 40 black Overnight Boxcars, and a “rider coach” on the end. I’ve seen two pictures of the train with the coach but I can’t determine what type of passenger car it is or the color. Does anyone have more information? I am trying to model, in HO, a prototypical train and I had assumed the end was a caboose. Also, were all the Zippers carrying a “rider coach”?

Thanks,

Mark C.

To quote from Anthony W. Thompson’s Southern Pacific Freight Cars, volume 2: cabooses;
“One final caboose usage may be mentioned: the occasional assignment of a steel coach on the Coast Line’s “Overnight” freight train. The reason was that this train’s high-speed operation necessitated steel whells, as opposed to cast-iron ones, on all cars in the train. SP’s steel cabooses all had steel wheels, but the wooden cars had cast-iron ones, few of which had been replaced with steel by the mid-1950’s. Therefore, whenever steel cabooses or one of the 950-series coaches (60-foot Harriman coaches converted to cabooses) were unavailable, another from the plentiful supply of 60-ft. coaches would be used on the “Overnight,” particularlly for trains departing fron San Francisco, with its extensive commute fleet. Several photos exist of such a practice, and it is also documented by interviews with former employees.”

So, what you were seeing were NOT night rider coaches but 60-ft. Harriman coaches, whether converted to caboose service (renumbered, lettered “SP CABOOSE”) or not, functioning as cabooses (no paying passengers). These coaches were green.

If you’re an SP fan, I highly recommend Thompson’s series of books on SP freight cars. Three volumes have been published so far.

Mark Pierce,

Thanks! Just what I needed!

I used the term “Rider Coach” because that is the term used by R. J. Church in “4-8-4’s Daylight - The Complete Story of Southern Pacific’s GS Class 4400 Series Locomotives”. The book’s acknowledgements indicate extensive input from SP’s senior mechanical staff and others who would be in a position to know what SP did at the time. The pictures I referred to are on pages 96 and 113. Both trains have a GS-4 on lead, 13 Overnight boxcars, and a coach on the rear. I’ll have to find a “proper” coach!

Mark C.

You’re welcome. I’m still hoping to hear from someone to provide any info on 60’-Harriman crew cars converted from an All Day Lunch car such as SP 2802.