Hello!

I do not know any of the people in the photos but I would like to share some tricks I like to do when trying to identify who could be who :)

1)I take a good look at each photo zoomed in on the pc TOP to BOTTOM
Note clothing, items it the background and foreground for ideas of who, when, and where.
Examples:
Photo 2: German boy white collar outfit, try to look up the horse pull toy to see where it was made to find an era, location.
Photo 5: Take a look at the military out fit from hat style, hat pin, buckle. This may help you determine rank, war/era.(Also note the wedding band).
Photo 16: note if a family had this number of children, boys and girls?

2) I like to take my photos to good old paint or any type of drawing program you have to cut and paste photos together. This will help to see who looks like they may be related, or even the same person in different eras. You can splice 2 photos in half and stick them together or even place lines mapping out facial features as I did on the attached.

3.) Always note what type of photo and photographer information. This will help you with date and location

I hope this helps you to figure out who, when, and where and to eventually put names with these faces :)