People use postcards these days as fun little ways to say "Hi" to their friends - maybe make them jealous of their exotic vacation spot.

But before people were able to update their Facebook pages from anywhere - or even use a consumer camera to remember their vacation - postcards were important souveniers.

Earl Brechlin has collected more than 100 postcard images from Bar Harbor and he tells the story behind them in his book "Forever Yours, Bar Harbor."