First 100 is a bright series of board books featuring pictures and labels of baby's first words. This Busy Baby series of books presents a range of bright board books, to stimulate children and foster their development, as well as providing a fun first introduction to books. First 100 Things That Go features little ones' favorite mega machines including: cars, trucks, tractors, planes and boats.First 100 is a bright series of board books featuring pictures and labels of baby's first words. This Busy Baby series of books presents a range of bright board books, to stimulate children and foster their development, as well as providing a fun first introduction to books. First 100 Things That Go features little ones' favorite mega machines including: cars, trucks, tractors, planes and boats.