S. B. Grenell A projector for transferring detail from odd-scale compilations to Hydrographic Sheets PDF (English)
B. G. Jones Common Errors of Inexperienced Personnel in the Compilation of Air Photographs PDF (English)
Paul A. Smith The Accuracy of Soundings and Positions obtained by methods used in U. S. C. & G. Survey PDF (English)
Julio Cuvillo Geodetic Base in the Island of Grand Canary measured by the Hydrographic Expedition of the Archipelago PDF (English)
E. Gigas Aus der Praxis der Triangulations-Arbeiten ie Ord. beim Reichsamt für Landesaufnahme PDF (English)
