Pedagogy and the institutions of theory -- I: Dispersing the diagrams, 1948-54 -- An introduction in the Poconos -- Freeman Dyson and the postdoc cascade -- International dispersion -- II: Dispersion in form, use, and meaning -- III: Feynman diagrams in and out of field theory, 1955-70 -- Teaching the diagrams in an age of textbooks -- Doodling toward a new "theory" -- "Democratic" diagrams in Berkeley and Princeton -- Paper tools and the theorists' way of life
