There are several transistor history web sites that are invaluable references. They are included here by way of acknowledgement of the work of their authors and their exceptional contribution to the preservation of transistor history.

Radiomuseum Leading database of tubes, transistors and receivers
Crystal Fire: The Invention, Development and Impact of the Transistor (Michael Riordan and Lillian Hoddeson)
Bell Labs History of the Transistor contains some of the archive photographs of the Bell transistor history and other artefacts.