Roy L McIntosh's 1941 Harvard Histology Lab Notebook with Tons of Wonderful DiagramsI love finding notebooks like this this one, kept by a Roy L. McIntosh for a Histology class at Harvard in 1941, and holding hundreds of carefully drawn diagrams of microscopic anatomy, many it appears having been observed first hand (under a microscope) though various dissections. The drawings get better and better as the semester progresses, most very delicately executed in colored pencil with handwritten labeling. Happily they were all done on a