Jumbo Bricks was a small theme exclusively manufactured by Samsonite from 1964 to 1972. The sets contained bricks larger than the normal system bricks, much the same as today's DUPLO bricks. However, unlike DUPLO, Jumbo Bricks are not to a relative scale to standard LEGO bricks. They were marketed towards children from nursery school through to first grade. There were six sets produced for this theme.
1972 LEGO Sets
1972 was a pivotal year in LEGO’s U.S. expansion. Following the end of its Samsonite license, LEGO founded LEGO USA in Brookfield, Connecticut, while Samsonite continued production in Canada. The year also brought key new parts—including the first boat hulls, wings, propellers, and helicopter rotors—broadening creative possibilities. Trains remained a major focus with sets such as 181 Train Set with Motor, 180 4.5V Train with 5 Wagons, and 724 12V Diesel Locomotive, continuing to enhance LEGO’s realism and play depth.