"Type C heavy-atom". Work on seal myoglobin, which Kendrew refers to in his 1963 Science article as a close runner-up to the final choice of sperm whale. Material includes notes, calculations, data, EDSAC sheets, electron density contour maps etc., most by Kendrew, but including contributions and/or correspondence from R. Hart and R.E. Dickerson at Cambridge and from H. Scouloudi who continued to work on seal myoglobin for many years at the Royal…