You can learn a lot from a photo. Even if you know nothing at all about the people pictured - the way they are posed, their clothing, hair style, and hats can tell you a lot about when (approximately) the photo was taken. In some cases, you can even figure out where it was taken.
Women's fashions are the first thing to check when trying to date a photo. Fashions changed as often as they do today and they are an excellent indicator of the date. Things like sleeve style, closeness of buttons, pleating and even fabric can tell you a lot.
There are a number of great publications out there that can help. If you click here you will be rewarded with a pdf document full of helpful hints. f you want to take your research further, check out the following:
You can find dozens more resources on Google!
-- submitted by Linda Mecchi