Commission IV 
Application of Photogrammetry and 
Aerial Photography for 
Surveying the Earth s Surface 
Report to the Eighth International Photogrammetric Congress 
to be held at Stockholm, Sweden, 
17-26 duly, 1956 
President: Colonel G. S. Andrews, Canada 
Secretary: T. J. Blachut, Canada 
Subcommission IV-1 : 
Chairman: Dr. H. Harry 
Switzerland 
Photogrammetric Cadastral Mapping 
Subcommission IV-2: 
Chairman: Dr. B, Dubuisson 
France 
Mapping of Urban Areas 
Subcommission IV-3: 
Chairman: Mr. T. J. Blachut 
Canada 
Small-Scale Mapping