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1938 
1939 
1940 
1941 
1942 
1945 
1944 
1945 
1946 
1947 
1948 
The first issue of '"Photogrammetrisa" review is published. 
The General Assembly of the Congress of the International 
Society for Photogrammetry, in Home, states it as its of- 
ficial publication. 
Paolo.Dore's book "Fondamenti di Fotogrammetria" is publis- 
hed in Bologna. ^ 
Zeiss Pleon (1509) lens, the first very wide angle photo- 
grammetric lens, is manufactured, 
Wide angle Russar 22 (70 mm, 115, 3, 122°) photogrammetric 
Jens is made up. 
Stereocomparator, model G, is made up. 
Thompson~-Barr & Stroud plotter is made up. It was destro- 
yed during the Second World War, without being tested, 
February. Reinhard Hugershoff died (born in 1882,0ctomber) 
He was a designer of plotters (Autocartograph ^ 1920, Aero 
cartograph - 1926, etc.) and teacher, one of the world 
photogrammetry pioneers. 
Stereocomparator, model H, is made up, 
Zeiss radial-secator is made up. 
Wild RC 5 automated aerial survey camera, having film, is 
manufactured. 
Wild ST 1 and ST 2 mirror Stereoscopes are made up. 
May,2. Otto von Gruber died (born in 1884, August, 9). 
Wild Photorectifier, model E 2, is made up. 
The American Society for Photogrammetry publishes "Manual 
of Photogrammetry". 
Aquilar wide angle lens (125 mm, 90°) used in aerial sur- 
vey cameras, having plates, is made up in France. 
Clark describes in detail the theoretical and practical 
concepts regarding the film use in infrared photography 
for aerial photographs. 
M.Zeller's book "Lehrbuch der Photogrammétrie" is publish- 
ed in Zürich. The French version will be published after an 
year. 
September, The Sixth Congress of the International Society 
for Photogrammetry is held in Hague. 
L.Bertele makes Wild Aviotar photogramme /ric lens, (210 mn, 
60") having 9 lenses. 
Poivilliers Stereotopograph, model D, is made up in France. 
Smith describes the first use of radar photographs to im- 
prove map accuracy. 
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