Benton, Chris. Notes on Kite Aerial photography. http://arch.ced.berkeley.edu/kap/kaptoc.html 

Cal Poly 
http://digitalcommons.calpoly.edu/cgi/viewcontent.cgi?article=1019&context=honors

Epaperpress http://epaperpress.com/pano/index.html

GDAL.org http://gdal.org/ Geospatial Data Abstraction Library 

Gibbs-Smith, C. H. A History of Flying,1954. Frederick A. Praeger, New York.

GIS Development http://www.gisdevelopment.net media organisation working to promote and propagate the usage of geospatial technologies

GIS wiki encyclopedia http://wiki.gis.com Moderated GIS encyclopedia

Grassrootsmapping.org  October NYC public workshop:
http://grassrootsmapping.org/2010/10/public-workshop-in-new-york-city/
http://grassrootsmapping.org/2010/10/nyc-report-back-on-umos/

Illsley, Paul http://www.paulillsley.com/airphoto/systems/balloons-kites.html 

Lippincott, Mathew.  headfullofair.com headfullofair@gmail.com 

Long, Stewart.  gonzoearth.com stewart@gonzoearth.com

Map Tiler http://www.maptiler.org/ 

Meehan, James C.  http://vpizza.org/~jmeehan/balloon/#regulations

NuVu Studio workshops in Cambridge, MA.  
http://nuvustudio.org/category/balloon/

Open Source Geospatial Foundation http://www.osgeo.org/ 

Pano Tools http://wiki.panotools.org/Field_of_View 

PAPA. History of Aerial Phototgraphy. http://www.papainternational.org/history.html  

PTGUI FAQ http://www.ptgui.com/support.html 

Riallant, David.  pictearth.com driallant@pictearth.com 

Theia Technologies
http://www.theiatechnologies.com/calculator.html 
http://www.theiatechnologies.com/resolution.html 

Verhage, Paul. NearSpace. Chapter 14
http://www.parallax.com/Resources/ApplicationsContests/Science/NearSpace/tabid/567/Default.aspx 

Warren, Jeffrey Yoo. unterbahn.com grassrootsmapping.org jeff@unterbahn.com 

Western Carolina University.  
http://www.wcu.edu/27805.asp