Alexander Leslie Blackwood (1862 - 1924) - of Chicago, Illinois, was born in Huntingdon county, Canada, July 28, 1862, son of John and Ann (Steell) Blackwood.

He attended common schools and was graduated from Huntingdon Academy in 1882, with the A. A. degree, from McGill University, at Montreal, in 1886, and Hahnemann Medical College, Chicago, in 1888.

He studied in the New York Post-Graduate School in 1889 and Johns Hopkins School in 1901, and since completing his course in Hahnemann Medical College has practised in Chicago.

He is now (1905) Senior Professor of Materia Medica and Professor of Clinical Medicine in Hahnemann Medical College, Chicago.