Child Labour Shoe repair Cobbler * Early 1900s

I found this in an old National Geographic

I estimate the ad is from the 1920s or 1930s 

It depicts a time when children did adult jobs which was probably in the 1800s or 

* Early 1900s

707 Photo from Life

Like New - Prompt Service

FAS Copyright Made in USA

5.75 by 8 inches 

very rare!