Impressed by advancements in Lego design. These are my City/System Tractors from 1991 until today. Taken from sets 4525, 4543, 4563, 6512, 60287 and 60390. - 9GAG
Lego 6512 -- Landscape Loader, Not Complete | eBay
Landscape Loader : Set 6512-1 | BrickLink
Lego Set 6512 Landscape Loader Complete Set With box & Instructions | eBay
LEGO 6512 Landscape Loader Set Parts Inventory and Instructions - LEGO Reference Guide