A soldier killed in the First World War, the man who helped keep the doors to Great Ormond Street Hospital open for more than 30 years, and a 10-year-old servant working for a laundress in 19th-century Bath are all revealed by messages sent using the first real social-media phenomenon of the 20th century. Drawing on the research from her collection of more than 300 postcards, Family History Federation speaker Helen Baggott will share some of the stories in an illustrated talk.