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National Report of the United States 
13th International Congress for Photogrammetry 
Helsinki, Finland 
July 1976 
Frederick J. Doyle 
U.S. Geological Survey 
Photogrammetry in the United States is much more loosely organized 
than in many other countries. More than 40 Federal agencies are 
involved in mapping of one kind or another, and many of these main- 
tain their own photogrammetric organizations. Several States 
maintain extensive photogrammetric operations. The American Society 
of Photogrammetry has over 120 sustaining (corporate) members engaged 
in aerial photography, mapping, instrument manufacture, and various 
services. Numerous other commercial organizations are not affiliated 
with the Society. Photogrammetry and photointerpretation are taught 
at various levels in a number of schools throughout the country. As 
a consequence of this diversity, it is nearly impossible to put 
together a comprehensive picture of photogrammetric activities in the 
United States. 
In order to prepare this report a letter of inquiry was sent to the 
major Government mapping organizations, to all sustaining members, and 
to all universities offering work at the graduate level. In addition, 
specific individuals were requested to prepare summary reports of 
certain important aspects of photogrammetric activities in the United 
States. Not all of these organizations or individuals responded to 
the request. Consequently, the report should be considered as repre- 
sentative rather than comprehensive. 
The level of information provided both by organizations and by indi- 
viduals varied widely. In order to achieve some measure of balance 
I have taken the liberty of editing severely some of the contributions. 
I trust that in this process I have not ommitted items of major 
significance. 
The contributions of those who took time to prepare material for this 
report are gratefully acknowledged.