Besides being simple mementos, family photographs can offer insights into the past. This unit looks at some of the ways photographs can reveal, and sometimes conceal, important information about the past. It teaches the skills and provides some of the knowledge needed to interpret such pictorial sources. This study unit is just one of many that can be found on LearningSpace, part of OpenLearn, a collection of open educational resources from The Open University. Published in ePub 2.0.1 format, some feature such as audio, video and linked PDF are not supported by all ePub readers.