About LEGO Classic Supplemental
Supplemental sets are the parts packs of the 1960s, sold so that builders could add to a basic set the bits they needed most. They held windows and doors in frames, plates in several sizes, corner bricks, gates and fences, turntables, wheels with axles and train couplers. Many of these parts were new at the time, and the packs were often the first way to get them, like the wheels LEGO introduced in 1962.
1968 LEGO Sets
1968 was a landmark year with the opening of the first LEGOLAND park in Billund, Denmark, attracting hundreds of thousands of visitors. LEGO also introduced the first 12V train motor, spoked wheels, and magnetic couplers, greatly improving the realism of its Train line. The company refined packaging with photo-based idea layouts and transitioned away from the small-scale Town Plan system. This year also marked the arrival of Jens Nygaard Knudsen, who would go on to design the LEGO minifigure and shape future core themes.