At what point in time did the railroads stop running solid
trains of stock cars? I gather that the Union Pacific ran
their stock trains into Los Angeles as late as the 1960's,
but photos of other railroads in this period seem to show
that moving animals by rail in solid trains or "blocks" was
tapering off by then. Photos of Southern Pacific trains from
this era reveal just a few stock cars in consists, mostly at
the head end of the train.
So what's a good date for the elimination of solid trains
of stock cars - the late 1950's?