Reference drawings/photos of children

[Lynn Der]

I'm currently painting a portrait of a 2 year old and her 6 month old brother. The kids are older now, so I had to use a photo the parents provided (yuk). The picture is so bad that I decided to "make up" the kids' bodies to add some interest - the problem I came across was that I couldn't find any reference drawings or pictures of baby's feet, hands, legs, etc. that give an indication of relative size. In other words, does an infant have feet that are rougly the same size as their face? How long are a 2 year old's legs, relatively?

I have a number of anatomy books for artists, but none of them deal with children.

A search on the internet for "baby's feet" finally produced one photo I could use.

Is anyone aware of a reference book for the anatomy of children?

Thanks

Lynn Der