Harriet Lane's colourful 60-year medical handbook has saved countless kids

For 50 years, this book has been the bible for hospital paediatrics.

In the early 1950s, six paediatric residents at Johns Hopkins Hospital sat down at a table and jotted down notes they thought would help as they began treating patients. They made copies and put them in loose-leaf notebooks. Every few years, other residents would add information about tests, results, diagnoses and drugs for children.