It's a lovely chart. Your question is a bit fun, since the chart is clearly old and that's part of its charm isn't it? I scanned through it looking for any obv

It's a lovely chart. Your question is a bit fun, since the chart is clearly old and that's part of its charm isn't it? I scanned through it looking for any obvious errors or things we've changed our understanding of a lot since then. There's one picture of using Radium radiation in hospital treatments that seems very old-fashioned.