PA - short-haul (suburban) coach
PB - coach or chair car
PBO - coach-observation
PC - parlor or chair car
PD - tavern
PDS - tavern-sleeper
PL - lounge
PO - observation
PS - sleeping car
PSA - dormitory
PV - private or business car
DA - standard dining car
DCL - lunch-counter lounge
DD - diner-dormitory
DE - diner without kitchen
DK - dormitory kitchen
DKP - kitchen car
DLC - lunch-counter kitchen
CA - baggage-coach
CBS - baggage-dormitory
BE - standard baggage
BEM - baggage-express-messenger
BH - horse car
BLF - flatcar (usually for containers)
BR - refrigerator express
BX - box express
BXM - box express messenger
MA - postal car
MB - baggage-mail
MBD - mail-baggage-dor-mitory
MD - mail-dormitorv
1A - instruction car