Microfilm,          If a source of information, such as a book or a paper document, cannot be maintained in its original format, conversion to another medium is considered an option. Microform technology is an alternative format that preserves information and the intellectual content of materials. Micro-forms are considered to be one of the most stable […]

Phonograph Records,           Sound recordings or phonograph records preserve information through music and recorded voice and allow such material to remain accessible over time. Recordings have been made on wax and metal cylinders, and on disks made of aluminum, glass, and vinyl. The sound signal is stored within the grooves of recording and is released […]

Photographs,         Photographs record and store information regarding events, history, and people and provide through study a basis for the development of new information. Photographs are also an art form, comprising images created with a variety of techniques, such as the daguerreotype, tintype, and black-and-white and color prints. The process used to create each format […]

Introduction:       Information has been recorded throughout time in wide a variety of formats as human knowledge, ability and skills developed.  Cave paintings, papyrus scrolls, handwritten manuscripts, and visual or sound recordings in various languages and formats provide information to people and allow knowledge acquired by one generation to be passed to the following generation. […]