This newspaper article from 1909 looks at the use of pure oxygen by athletes as a form of stimulus. It also discusses the use of strychnine, showing that doping in sports was an issue of concern in the early 20th century.
Using this item
National Library of New Zealand, Papers Past
Reference: Manawatu Standard, 24 September 1909, p. 2
Permission of the National Library of New Zealand, Te Puna Mātauranga o Aotearoa, must be obtained before any re-use of this image.