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Congress Exhibitions 
There are six different categories of exhibitions in the Congress. These are: 1. Tech 
nical; 2. National; 3. Historical; 4. Education in Photogrammetry; 5. Commissions IV 
and V; 6. O.E.E.P.E. A brief description of each of these several exhibitions follows. 
Technical Exhibition. 
This exhibition occupies seven large halls and some adjacent smaller rooms, all 
within a few minutes’ easy walk of the nerve-centre of the Congress in the Senate 
House. An inter-precinct bus-service runs between the exhibition locations at 
frequent regular intervals; the timetable for this service is posted on the Congress 
Notice board. 
Over forty exhibitors have contributed displays of up-to-date developments in 
photogrammetric materials, technologies and apparatus and of the services which 
use these in world-wide mapping projects. A comprehensive description of this 
exhibition is given in the Congress Exhibition Guide published separately. 
National Exhibits 
A stroll from the Senate House Foyer along the main axial corridor of the building 
takes one to the Institute of Education where exhibits from sixteen different countries 
are set up in the gymnasium. The contributing countries are Austria, Belgium, 
Canada, Finland, France, Germany, Iran, Israel, Italy, Lebanon, Netherlands, Norway, 
Sweden, Switzerland, U.S.A. and Yugoslavia. 
The general theme of the exhibition is to demonstrate the uses and developments 
of photogrammetry in national fields, but the overall result gives much food for 
thought in the international field. It might be supposed that the restriction of 
exhibitors to the use of flat or nearly flat displays must result in a flatness of treat 
ment, but this is far from being the case. The individual efforts of the contributors 
have provided a great variety of forms of illustration which must be seen to be 
appreciated. 
The flexibility of photogrammetry, in terms of scale, is shown by plotting varying 
from 1:1 (Belgium) to 1:200,000 (France) and the recording of information on scale 
1:2,500,000 (Iran). Among the many widely differing applications of photogrammetry 
demonstrated, are cadastral work (Lebanon), use for legal purposes (Sweden), rural 
planning (Finland), glaciology (Switzerland), architecture (France), and coastal 
surveys (Yugoslavia). The forward look of photogrammetry is illustrated by research 
in meteorology (Germany), automation (Canada) and organisational methods 
(Netherlands). 
This short summary cannot attempt to convey the wealth of information given by 
this array of exhibits for which the Congress Board sincerely thanks the contributing 
nations. Delegates should allow themselves plenty of time for visiting this exhibition. 
The Historical Exhibition. 
About one hundred exhibits from the earliest photogrammetric plans produced over 
a century ago with the aid of Laussedat’s Planchette, trace the development of 
photogrammetry over the years up to the 1930’s which may now be regarded as the 
historical period of our science. 
Early plans, maps, photographs, cameras, stereoscopes, rectifiers, phototheodolites, 
plotting apparatus and displays of principles and processes from Canada, France, 
Germany, Holland, Italy, South Africa, Switzerland and the United Kingdom represent 
a truly unique international collection. Exhibits are well documented and catalogues 
are provided at the site. 
The Exhibition is housed in the Gymnasium of University College, University of 
London, by kind permission of the Provost. This is near the north end of Gordon 
Square, no more than five or six minutes' walk from the Senate House or two from 
the north terminus of the inter-precinct bus route. 
Congress Exhibitions—Continued 
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Exhibition of Education in Photogrammetry. 
The increasing use of photogrammetry, leading to multiplying demands for highly 
qualified photogrammetrists, has stimulated the formation and growth of facilities 
for teaching the science at the graduate level and for associated research. 
Eight of the leading schools in this movement have contributed exhibits indicating 
the lines on which progress is being made. In the limited space available, little more 
than facts can be shown but these offer much material as the basis for fruitful 
discussion and further progress. Those taking part are: 
Berlin-Charlottenburg, Institut für Photogrammetrie, Technische Universität; 
Columbus, Ohio, U.S.A. Ohio State University; 
Cornell University, Ithaca, N.Y., U.S.A. Surveying Department, School of Civil 
Engineering ; 
Delft, International Training Centre for Aerial Survey; 
London, Department of Civil and Municipal Engineering, University College; 
Milan, Centro di Addestramente e Strade Politécnico; 
Stockholm, Inst, for Fotogrammetri, Kungl. Tekniska Högskolan; 
Zurich, Institute der Eidg. Technische Hochschule. 
The exhibits are placed along the east gallery of the Senate House Foyer, beginning 
at the head of the ceremonial stairway. 
Exhibits, Commissions IV and V. 
Commission IV. This Exhibit demonstrates international collaboration in plotting, 
over the past four years, by some forty different participants, as well as the clarifica 
tion of certain technical questions of photogrammetry. It takes the shape of docu 
mentation on Essais Contrôlés (Controlled Experiments) on sub-Commission IV 1, 
Revoira; IV 2, Wabern; IV 3, Renfrew; and IV 4, Research by Hallert. The exhibits are 
located on both flanks of the main axial corridor at the entrance to the Institute of 
Education. 
Commission V. This Exhibition, located in the Gallery Foyer of the Senate House, 
serves the dual purposes of supplementing information on the three principal 
subjects being discussed by this Commission, and of illustrating special applica 
tions of photogrammetry which are not on the programme for discussion. 
O.E.E.P.E. 
Between the Educational Exhibits and Commission V Exhibit, in the Gallery of the 
Senate House Foyer, the president of Commission E of the Organisation Europeéne 
d’Etudes Photogrammétriques Experimentales (O.E.E.P.E.) has arranged an exhibit 
to show the work of his commission in the production of topographic maps on scales 
1:50,000 and 1:100,000 from photography on scale 1 to 125,000. 
CONGRESS PROGRAMME