Photographic Dictionary For Professional or Amateur (1902) this is a large 600+ page book which provides a historic record of how photography was done in the late 19th and early 20th century- cram packed with interesting ideas many still applicable today.
Art Principles In Portrait Photography another early book but still very applicable today, which describes how classic artistic values can be applied to your photography.
Photographic Glossary(modern) The links below lead to the various sections of this very extensive photographic glossary. It cover the whole gamut of photography including digital and conventional as well as many types of special purpose photography.
A B C D E F G H I J K L M N O P Q R S T U/V/W/X/Y/Z
Here you will find a large collection of links to photography related web resources.
Photographic web resources - a large collection