Here were a couple of comments on the original post. These comments
appeared on the Pacific Electric Railway group at:

http://finance.groups.yahoo.com/group/PEry/

Bob Chaparro
Hemet, CA
=====================
The fact that there is electric overhead in the photo means that the
photo was not taken at Los Alamitos. It could have been on the Santa
Ana - Huntington Beach line, which was built largely to serve a beet
growing area. The PE did operate between Huntington Beach and a sugar
factory at La Bolsa on a SP branch and it is possible that a beet
loader could have been located on the Santa Ana line, but I have not
seen any record of one.

Cliff Prather
++++++++++++++++++++++++
Looks to be a Blackburn type rack that didn't need the stake pockets-
so it may be beet RACK PE 3375 on a flatcar, if there are any purists
in the crowd.

Ed Workman