Wonder why the art was "lost" (maybe between 2008 and now, as the title does not contain th word)? I guess it is true that with computer program one does not ha

Wonder why the art was "lost" (maybe between 2008 and now, as the title does not contain th word)? I guess it is true that with computer program one does not have to rely an books. However, looking at the civil engineering books of my wife, which a full of nomograms, I would not consider it lost. I guess they follow a similar fate as logarithmic tables.