Call for photos as material to paint

Face 1 (24" x 24" acrylics, ink on canvas)

I am working on a series of paintings of faces from the past. I am always looking on the internet for interesting faces to paint but sometimes I am not sure if I can use them or who to ask for permission.
I do not want to have any problem with copy rights once I have finished painting and I publish it on Facebook or on my blog or in a gallery.

Therefore I am asking everybody who sees this to help me. I am looking for photos of children / young people (not babies) from the past - from all over the world. Your grandmother / father, uncles, aunts, your parents when they were children. Not the usual smile for the camera kind of picture... but the cranky one, the pensive ones the ones with attitude.

Here are 2 examples of what Iam looking for but not limited to (these are pictures taken by Vivian Maier in New York - great pictures but copy righted)

It doesn't matter if it is in color or in black/white, nor the race or if the face is part of a group picture, or if the child is not a close-up (but not too far away either otherwise the close-up is too blurry). 

I am not looking for actual photos but scans / jpeg of photos so you can safely send it to my email without the risk of losing a picture. By sending your picture (jpeg) you will give me permission to use the material for my art project without the expection of any reward.

If I will use your picture I will contact you for more information and if you want I will send you a print (on photopaper) of the painting.

Please send your photo / picture / jpeg to molassooij@hotmail.com

Thank you!!!