Miriam Keuhneisen's 1922 Chemistry Notebook with 40+ Meticulous DiagramsI'm always on the hunt for old diagrams of one sort or another, and Miss Miriam Meuhnelsen, who completed this chemistry class binder at Union High School (Maine) in 1922, was quite the dedicated and accomplished diagram drawer! Personally, I'm not so very much interested in the details of the experiments they illustrated, but rather just love them as stand alone drawings, which to me embody ideas of potential, action, reaction, etc. delivered in