Bulldozer 856 - studded Lego Technic from 1979. : r/legotechnic
Maarten van Ham on Twitter: "After 7 weeks at home I managed to reconstruct my 1979-1985 Lego Technic collection with help of my son. Almost complete. Great fun & good memories. These
Technic | 1979 | Brickset: LEGO set guide and database
Vintage Lego Technic 853 Car from 1979 - YouTube
Lego Technic 956 building instructions - Year 1979 - YouTube