Notebook, inscribed 'J. Pickworth IV' 'B12. C63 H97 O20 N14 P Co 12H2O 5:6 dimethylbenzimenazole N-[alpha]-D ribofinanoxide (2 or 3)-phosphate' Inside front cover. Manuscript notes and data re 'first three-dimensional Fourier', 'Three-dimensional Fourier or Cobalt Phases Alone', hand-drawn sections, 'Suggested Atomic Positions from 3-dimensional Fourier', 'Cobalt Atom Parameters', 'Patterson Projection', 'Calculated 3 dimensional Patterson', 'Absorption Corrections', 'Anomalous…