[Ambowife Designs]

all I can think of is one of the sites that sell images, and then extracting the person/kid.
unless you are after clip art people. the doodled colored in ones.
Those you can probably get at digiwebstudio
We don't have anyone doing those here so I think it's okay to tell you that hee hee!!
Cheryl Seslar is another one who designs clipart.