Folder B.3.1 (1952): 'Recent molecular structure lectures'. MS. drafts of 'A simplification of Hartree-Fock method', 'The V12 plague', 'The non-orthogonality catastrophe'. Folder B.3.2 (1952-1953): 'Virial Theorem lectures'. MS. draft of lecture 6 'The virial theorem'. MS. 'Notes on virial theorem (Hurley's Thesis)'. 2 typescripts by N.H. March (with covering letter) on 'The virial theorem in the Thomas-Fermi Theory', and 'The virial theorem…