Unofficial LEGO Sets/Parts Collectors Guide - The 1950 Kindergarten LEGO set... one of the most wonderful and colorful LEGO sets I have ever seen. The regular 700/1 (largest), 700/2 and 700/3 Automatic
LEGO set 700/3 1949 - images and contents
File:ABB bricks C.jpg - Wikimedia Commons
Automatic Binding Bricks - LEGO® History - LEGO.com GB
Automatic Binding Brick - Brickipedia, the LEGO Wiki
LEGO 700-F Automatic Binding Bricks Small Brick Set | BrickEconomy