[2] Mr Jeffs was a registered pharmaceutical chemist (Ph.C) and fellow of the Society of Hospital Pharmacists of Australia.
[2] At the time of his award, Mr Jeffs was the federal president of the Society of Hospital Pharmacists of Australia and the Chief Pharmacist at the Queen Elizabeth Hospital in South Australia.
[2] He later held the position of Chief Pharmacist at Royal Adelaide Hospital in 1968 for three years.
[4] Jeffs was also known for his work involving the methods and formulae for preparation of sterile eye drops.
[4] These methods were later used in the 1964 edition of the Australian Pharmaceutical Formulary and in overseas hospitals.