(95) 
jgrammetry. 
I have again the 
Photogrammetry 
es place in Ame- 
world. Before I 
express my deep- 
diotogrammetry, 
Congress. How- 
vanced age. 
the International 
become of great 
is degrees of the 
r. 
in Vienna, in the 
y” in antcipation 
letry in order to 
;. By the follow- 
r Photogramme- 
to the influence 
le “Societe Fran- 
Dwed in 1909 by 
: Jana. More and 
>ers still belonged 
Society into the 
Society” was the 
followed by the 
onvened the first 
r hich 400 photo- 
iost all Euopean 
in an exhibition 
n the first auto- 
t by Zeiss and in 
uheimpflug. Lec- 
lity of a success- 
d area by a corn- 
magnificent base 
: was interrupted 
s were suspended 
cation of further 
my instignation 
held in 1926 at 
Berlin with aerial photography and photogrammetry in the foreground of 
interest. Its principal attraction was the stereoplanigraph of Bauersfeld Zeiss. 
As a consequence of this congress international competition between Germany, 
France, Italy, Switzerland, and other countries resulted in the inventing of 
better and improved ingenious photogrammetric cameras, plotting apparatus 
and other photogrammetric equipment. The congress again paved the way for 
international scientific cooperation which contributed to the reestablishment 
of connection between nations torn apart by the war. 
After this congress many new national photogrammetric societies were 
organized in swift succession, so that the third International Congress held at 
Zurich 1930, was attended by 13 national societies. 
Two years later the twenty-fifth anniversary of the “Austrian Society of 
Photogrammetry” was celebrated, an accession at which delegates from all 
national photogrammetric societies were present, among them the Ex-Prime 
Minister of France, the well known mathematician Painleve, leading the 
French delegation. In 1934 the fourth International Congress was held at Paris, 
attended by 19 national societies, among them for the first time the American 
Society of Photogrammetry. It was the last congress at which I could partici 
pate. The next one, the fifth International Congress held at Rome 1938, was 
unfortunately foreshadowed by the impending second world war. The Presi 
dent of the International Society, elected at Rome for the incoming period, 
Prof. Dr. Schermerhorn, deserves high praise, in that only three years after the 
end of hostilities he was able to gather again the photogrammetrists of all 
countries at the VI International Congress of Photogrammetry at the Hague to 
continue their scientific and cooperative work for the betterment of photo 
grammetry. 
Prof. Dr. Schermerhorn had emphasized in his outstanding lecture about 
photogrammetry and world economics at the Geodetic Week in 1950 at 
Cologne, that photogrammetry now faces a number of great and quite new 
problems presented by the international economic and social development. To 
deliberate over these new activities there is no better place than Washington, 
the capital of the country in which aerial photography is exploited not only 
for surveying but also for geological, agricultural and many other purposes. 
It is to be expected that this congress will provide the opportunity for a 
very valuable and profitable exchange of ideas, experiences in regard to 
photogrammetry between the photogrammetrists of the old world and the 
new world, which will stimulate the future development of our science. In 
conclusion I wish the VII. International Congress of Photogrammetry a suc 
cessful and satisfactory settlement of the agenda before it and further full 
success in its professional proceedings.