A folder containing notes and essays on Electronegativity, Critical Potentials, Occurrence of extractors of metals, The metallic state, The sterochemistry of non-transition elements, The stability of metal ion complexes in aqueous solution, Ligand selectivity, Applications of complex formation, Molecular weight determination, Determination of structure by x-ray, electron and neutron diffraction, Nuclear magnetic resonance, Microwave spectroscopy, Electronic spectra, and Colour in inorganic chemistry. Also included is a note 'My chemistry tutor at St Anne's College was Dr Hazel Rossotti, who had undertaken research work with the Swedish chemist, Lars Gunnar Sillen. Perhaps arising from their link, Hazel set me and other first-year chemists at St Anne's a number of problems from the book Problems in Chemistry by Sillen, Lange and Gabrielson during Michaelmas Term 1962. I also worked through a number of problems from this book over the Christmas vacation of 1962/63 - nearly 70 years ago - Mary Archer, 3 August 2022.'