Picture Researcher's Handbook: An International Guide to Picture Sources and How to Use Them by Hilary Evans
This edition is a practical guide for the working picture researcher. It only lists sources which professional researchers have found useful. The information provided includes description of material, working hours and procedural methods. For the more complex institutions (like the British Library or Library of Congress), there is detailed information on using the facilities. The fifth edition contains over 1100 entries and is indexed by both country and subject matter.