AschenbrennerCV Claudius, English translation from Schrödter, W. with additions

Auelmann, R.R. (2012) Corona KH-4B Satellites

Baclawski (1997), J. A, Corona: The Foundation for a Map making Revolution, pages 231-241 in McDonald (1997)

Brunner, K.(2015) Im Dienst der Sowjetmacht. Geheimhaltung und Verfälschung von Karten in UdSSR und DDR

Brunner, K. (2015) Secrecy and the falsification of maps for military and political reasons (English translation, shortened). (English).

Cloud, J. (2002) American Cartographic Transformations during the Cold War,

Corona (2015), (satellite)

Day (1998), D.A., Logsdon, J.M., Latell, B. Eye in the Sky: The Story of the Corona Spy Satellites (Smithsonian History of Aviation and Spaceflight). ISBN-13: 978-1560987734 ISBN-10: 1560987731 .... Series: Smithsonian History of Aviation and Spaceflight pages 200-214. (Book)

Fischer, I. K. (2015) Wikipedia biography, Irene K. Fischer

Fischer. I. K. (1959) A Temtative World Datum from Geoidal Heights Based on the Hough Ellipsoid and the Columbus Geoid

Galiatsatos, N. (2004) Ph.D. dissertation University of Durham UK 392.p Assessment of the CORONA series of satellite imagery for landscape archaeology

Hilbert (2005) Optics to Rectify CORONA Panoramic Photographs for Map Making in Robert Shannon and Roland Shack: Legends in Applied Optics, ed. James E. Harvey, R. Brian Hooker, SPIE Press, PM 148, 2005 ISBN: 9780819458445

Hough, F. W. (1958) John Dille LIFE Magazine May 12, 1958 The Missle Era Race to Chart the Earth,

ITEK Corporation (1957-1996)

ITEK Panoramic Progress Part I (1961), The Advantages of Panoramic Photography

ITEK Panoramic Progress Part II (1962) Technical Analysis of Panoramic Photography

ITEK Gamma Rectifier Report (1966) Final Report Gamma 1 Rectifying Printers CIA SHC-66-8445-37 January 1966

ITEK Gamma Rectifer III (1966) Glass Plate Transforming Printer design study for project 8612 6 May 1966 NRO 5/6/1966 101 1400014490 ITEK Collection

Kawachi D.A. (1966) Image Geometry of Vertical & Oblique Panoramic Photography,

McDonald, R.A.,(ed), (1997). CORONA: Between the Sun and the Earth. The first NRO reconnaissance eye in space. Bethesda, MD: The American Society for Photogrammetry and Remote Sensing. (Book)

Madden, F. J. (1996) The Corona Camera System. ITEK's Contribution to World Stability 1996

Mugnier, C. (1973), Photogrammetric Instruments for the Army, The Military Engineer No. 417 1973

Ondrejka, R.(1980) Manual of Photogrammetry, 4th ed., 1980 Section 17.8.1

Operation Paperclip (1945)

Schrödter, W. (2002) Air Geography, Photogrammetry, Charting and Surveying in the German Air Forces 1888-2002

Sealander (1997), J. M., Image coverage models for declassified Corona, Argon and Lanyard satellite photography – a technical explanation, pages 177-188 in McDonald (1997).

Sohn, H. G. (2004) Mathematical Modelling of Historical Reconnaissance Corona KH-4B Imagery The Photogrammetric Record 19(105): 51–66 (March 2004)

USGS (2015) Satellite Imagery overview,

USGS (2015) Search and download Imagery,