He is Find A Grave memorial #100675072.
From the Courier-Journal, Louisville, Kentucky, Thursday, June 19, 1902: Prof. Joseph P. Barnum, one of the best know druggists and chemists of Louisville, died yesterday at noon at St. Joseph’s Infirmary after an illness of little over a week. Prof. Barnum who had been living in Tennessee for the last eight years returned to this city last Thursday because of a slight illness and went at once to St. Joseph’s. At the time no apprehension was felt in regard to his condition but he steadily grew worse and the end came yesterday morning.
Prof. Barnum was sixty-seven years of age and was born in New York. He came to Louisville to live about the beginning of the Civil War and shortly after the declaration of hostilities was appointed surgeon in the Federal army. He served throughout the war in that capacity and after he was mustered out of service engaged in the drug business at Fifth and York Streets. While in business at that stand Prof. Barnum was badly injured by an explosion of ether which he was preparing although he finally recovered without being permanently disabled.
He conducted the store for a number of years and then removed his stock to Fifth and Chestnut Streets and afterward to the Polytechnic Building on Fourth Avenue.
Prof. Barnum continued his business at the latter place until about ten years ago when the panic which swept over the country forced him to make an assignment. Since that time he had been surgeon for a coal mining company at Kensee and Lafollette, Tennesee.
Prof. Barnum was married in 1864 to Libbie Lemon a daughter of James Lemon, the jeweler of this city. Five children, now living, were born to them. They are Miss Fayette Barnum of Louisville, Richard of New York City, Joseph L. of New Albany, Whitney of St. Louis and Evarts, a member of the graduating class of the Manual Training High School.
Mrs. Barnum died nearly one year ago. Prof. Barnum was widely known as a chemist and an educator he having been the Dean of the School of Pharmacy for a number of years. He made several important discoveries in chemistry which have been of inestimable value to chemists and the medical profession. The interment will be in Cave Hill.