With those first 100 pictures, you may be developing an idea when the snapshots were taken. There are many things to look at that will give you a clue as to the approximate year and place. Ages of people can be determined by counting birthday candles on a cake. Time frames can be cut out from fashions and hair styles. Locations and landmarks indicate particular places. Even automobile models and technology can determine a certain time period. The telephone is an excellent source to indicate the change in history. Seasons are marked by the landscape or holiday photos.

I use one of those long plastic storage bins to store and sort the pictures. Dividers are marked by years, then used to separate the photos. You can use index cards, manila folders, cardstock or anything bigger than the size of the pictures. Blocks of years are combined at first until you get all of the pictures together. Just getting started is a big accomplishment. You can then go back and organize the photos in more detail. Now . . onto the next 100 pictures.