Background to Modern Science https://archive.org/details/backgroundtomode032734mbp Ernst Rutherford 2018.02.27
Disintegration of the Radioactive Elements Disintegration of the Radioactive Elements, Ernst Rutherford.pdf Ernst Rutherford 2018.02.21
Radioactive Substances and Their Radiations https://archive.org/details/radioactivesubst00ruthuoft Ernst Rutherford 2018.02.21