Simon on Twitter: "Lego set 850 from 1977-78. All original pieces and booklets included! A great find at my local op shop :) #thrifty https://t.co/uWpQiLwOed" / Twitter
LEGO Set 113-1 Universal Building Set (1977 Universal Building Set > Basic Set) | Rebrickable - Build with LEGO
1977 | Brickset: LEGO set guide and database
1977 LEGO Catalog 2 EN - LEGO instructions and catalogs library