Dr. Leslie's parents were Wm. and Sarah Leslie. He is the last of the seven children of the family. His parents are deceased.

After finishing his studies in the Elementary branches he entered Patten Academy in his home town and in it he completed a course of study after which he became principal of the same school and served in that capacity for a few years. From the position of teacher in the Academy he again entered on a course of study this time in Philip Exter College in the state of New Hampshire. His studies for the profession of medicine were taken in Dartmouth college, College Hanover N.H. and Bowdoin College at Brunswick ME. From the latter school he received his diploma in 1874 and began the practice of medicine in Sunapee NH where he remained eight years. Two years were spent in Windsor VT. On account of failing health he moved to Clyde KS. In this place he has lived and followed his profession for 26 years. His services were in great demand by many people in and out of town up to the last day he lived. He often worked much beyond his strength. His living in one place for twenty-six years with an ever increasing demand for his service and an ever increasing number of friends speak of him as a man thoroughly prepared for and efficient in his work as sell as being a noble citizen.