Folder B.30.1: 'Numerical values of integrals', c.1935. 4 sets of ms. notes. Folder B.30.2: 'Self-consistent field method for molecular hydrogen', 1934-1938. Multiple drafts (numbered 0-10 by CAC) and calculations. Includes a note by Coulson 'Subsidiary calculation to help Mulliken'. Folder B.30.3: 'Lengthy calculations of beastly integrals', c.1935. Extensive notes and calculations. Includes, in separate binder, Coulson's MS. 'Formulae for beastly…