GVII-2 
PHOTOGRAMMETRIC ENGINEERING 
ing nations, a summary of some of the present problems faced by the military 
photographic interpreter has been presented. 
The authors express their gratitude for the assistance and data furnished by 
the many who submitted information for this report. They are especially grate 
ful to the following country reporters: 
A. Haider 
Oslo, Norway 
M. Mathieu 
Rueil-Malmaison 
(Seine et Oise), France 
Earl J. Rogers 
United States of America 
H. E. Seely 
Ottawa, Canada 
Surveyor General of Pakistan 
Karachi, Pakistan 
B. Von Vegesack 
Boden, Sweden 
F. Walker 
Bristol, England 
Richard FI. Yuan 
Taipei, Taiwan 
In addition to the above, the following contributed substantially to the 
material used in this report. The authors express many thanks for these con 
tributions. 
John Carrow 
Robert N. Colwell 
Henry W. Dill 
John R. Dilworth 
W. A. Fischer 
Nils Hagberg 
Aulis Kallioinen 
Daniel Leedy 
S. T. B. Losee 
Arthur Lundahl 
Paul Maynard 
Karl Moessner 
Sven Möller 
Arne Sandberg 
John Sammi 
H. T. U. Smith 
Harald Svensson 
Allan Tanneryd 
B. A. Tator 
Percy Tham 
Robert Thurrell 
Page Truesdale 
Paul Willen 
Harold E. Young 
GENERAL 
General Summary 
Reports received for the period 1952-1956 evidence an accelerated spread of 
photographic interpretation knowledge and use into many fields of science. 
Much of this expansion has been in such sciences as geology and forestry, where 
photography has been used in some form for many years. However, there has 
also been application of photographic interpretation in a number of new areas. 
Some general observations on the nature of this expansion are set forth briefly 
in the following paragraphs. 
Most striking is the application of photographic interpretation to the field 
of large-scale mapping, where the many detailed annotations required for the 
special purposes for which the maps are designed requires a great deal of 
analysis of the earth’s surface. This is being done either by teams of interpreters 
working with the photogrammetrists, or by compositely trained personnel. 
In geologic fields, photography is being analyzed, for purposes of geologic 
mapping, for engineering purposes, and also for the mineral prospecting which 
is proceeding intensively in many parts of the world. In many geologic projects, 
field work is being used to supplement photo analysis, rather than the reverse, 
as was formerly the case. 
In forestry, two items of note are (1) the widespread popularity of photo