How To Identify A Photo's Time Period By Clothing Styles...It's as true now as it was 150 years ago; the fashions people wear are indicators of their times. In fact, styles of clothing and accessories -- as well as hairstyles and makeup -- can be used to help you assign a decade or even a specific year to your familys vintage photographs, which can be invaluable to your genealogy research! Here are several sites that can help you put your ancestor's photos into the correct era.
The Congressional Cemetery in Washington DC is the first cemetery where you can scan the QR codes on tombstones with your I-phone and it takes you immediately to the wikipedia article about the person buried there. (Now even the ghosts are bar-coded!) http://en.wikipedia.org/wiki/File:Anna_Thornton_-_Congressional_Cemetery_-_QRpedia.jpg
No matter where your genealogy takes you, maps are essential, whether of cities, counties, kingdoms, countries and different time periods. Borders are not static through time, so know the dates also! NB: Prussia takes in part of Poland. Map German States
Five Strategies for Finding Forgotten Females...This can be a large hurdle to get over to find a female ancestor, with prior marriages, moving, Mary's nickname was Polly, early divorce, etc. This helps. And , yes, Mary was called Polly late 1700's to mid 1800's.