Citations › Citation ID: 7

C7. BOOK: Daniel Konstanski, The Secret Life of LEGO Bricks: The Inside Story of a Design Icon (Unbound, 2022), p. 22.

When the first 2x4 bricks were created, the first connector pair,
composed of studs and tubes, was also invented.

I was first introduced to the 'connector pair' terminology in Daniel's book.