we gather at St. Louis Union Station, home of the Railroad Passenger Car Numbering Bureau private cars and SW-1

from their web-site

"The Railroad Passenger Car Numbering Bureau (RPCNB) established in 2002 is a wholly owned subsidiary of Railroad Passenger Car Alliance, and
provides member services for that organization. Great Lakes Railcar is providing day to day management of this member service"

Ken Borg photo