Field and depot maintenance manual : meter, photographic exposure LM-46A.

"21 October 1960."

Operator and organizational maintenance manual : meter, photographic exposure LM-46A.

"September 1960."

Organizational maintenance manual including repair parts and special tool lists : flash unit, photographic, repeating LM-33(1).

"April 1967."

Operator's and organizational maintenance manual including repair parts and special tools lists : photographic projection printer EN-36B and EN-36B1.

"January 1969."

Operator's and organizational maintenance manual including repair parts and special tools lists : photographic darkroom group, ES-38B (NSN 6780-00-242-5756) and ES-38C (NSN 6780-01-057-5621).

"May 1969."

Organizational maintenance manual : plotting tables, photographic film, AR-87A and AR-88A.

"April 1966."

Organizational maintenance manual : viewer, stereoscopic roll film, photographic interpretation AR-90A, (NSN 6675-00-944-7146).

"April 1966."

Die städtischen Archive in der Provinz Posen,

Mode of access: Internet.

Mitteilungen aus dem Vaticanischen Archive

"Hrsg. von der Kaiserlichen Akademie der Wissenschaften"

Photographic Mosaics

"An annual record of photographic progress"

Picturesque Cambridge : a selection of photographic reproductions with a brief itinerery.

Mode of access: Internet.