Wikipedia 

Railway Express Agency: Yesterday's Federal Express 

AmericanRails.com 

HO Scale Models

GACX 53'6" Wood Reefer

Broadway Limited Imports #1455, 1480, 1838, 1840

BLI 1838

Walthers #932-5485

WALTH 5485

50' Riveted Steel Express Reefer

Walthers #932-6249 - Striped Scheme, As Delivered

Atlas (Branchline Trains) #2504 - As Delivered [1947]

BL 2504

Walthers #932-6241 - Hunter Green w/Full Name Herald

Atlas (Branchline Trains) #2501 - Hunter Green w/Full Name Herald [1949-1952]

BL 2501

Walthers #932-6242 - Hunter Green w/REA Logo Herald

WALTH 6242

Atlas (Branchline Trains) #2502 - Hunter Green w/REA Logo Herald [1952]

BL 2502

Walthers #932-6243 - Chromate Green w/REA Logo Herald

Atlas (Branchline Trains) #2503 - Chromate Green w/REA Logo Herald [1960s]

BL 2503