With Lego back to 1991 again: 9V train set 4563, flat bed with tractor 4543, tanker car 4537 and level crossing 4539. Still cobbling together some parts, but getting there. - 9GAG
LEGO Set 4002016-1-s4 Metroliner 1991 (2016 LEGO Exclusive) | Rebrickable - Build with LEGO
LEGO® trains - LEGO® History - LEGO.com NO
LEGO TRAIN 4558 Metroliner from 1991- a classic passenger 9V train - YouTube
Trains | 1991 | Brickset: LEGO set guide and database
Trains | 1991 | Brickset: LEGO set guide and database
LEGO Set 4563-1 Load and Haul Railroad (1991 Train > 9V) | Rebrickable - Build with LEGO
4536 Lego Complete Blue Hopper train Car 9V vintage 1991 set railroad | eBay