Webfinds: Boys in Long Johns underwear, boys, girls 70s bibs

I searched for some non-bibs vintage stuff and just found these links (including snow bibs).

John Walton was often shown in Long Johns or union suits /  underwear. I don't remember showing the boys. In the summer boys usually don't wear any underwear. I wonder what underwear tomboys , girls wearing under their bibs.

 

http://shop.truck-store-niebel.com/epages/Niebel_Thorsten43717608.sf/de_DE/?ObjectPath=/Shops/Niebel_Thorsten43717608/Products/KLJ1/SubProducts/KLJ1Gr.116

http://frocktasia.blogspot.de/search/label/mail-order%20catalogue