GREAT BRITAIN 9 
15. Vol. 1 No. 3 
"The Williamson plotter'* 
by J. E. Odle 
16. Vol. 1 No. 4 
"The Adjustment of a Block of Aerial Triangulation 
Evaluated by the A5" (1954) 
by H.H. Brazier M.B.E., B.A. (Cantab) 
Chief Computer 
and V.A. Williams Senior Superintendent 
Directorate of Colonial Surveys 
pho t ogrammetria 
17. Vol. X No. 4 
"The Thompson-Watts plotter" (1953 - In German) 
by W. Schermerhom 
18. Vol. X No. 3 
A translation into German of the article in 
The Photogrammetrie Record Vol. 1 No. 3» 
entitled 
"The Williamson plotter" 
by J. E. Odle