From Portland to medical practice in Illinois
Oleson was born in Portland, Maine, in 1842. After attending local schools he worked for a druggist, learning about medicinal substances before entering military service in 1862. He became a hospital steward and then an assistant surgeon with the 14th United States Colored Infantry. The Maine Historical Society preserves a surgical kit associated with his wartime service, a material reminder of the circumstances in which he first practised medicine.
After leaving the army he studied at Berkshire Medical College and Harvard Medical School, graduating from Harvard in 1866. He established a practice in Bloomingdale, Illinois, and, after a short period in Columbus, Ohio, settled in Lombard in 1877. His family included a son, Richard Bartlett Oleson, who also became a physician. He served in local offices, including village and school finance, and died in Lombard on 1 December 1906.
His home remains part of Lombard’s documented architectural history. The village’s historical survey identifies Charles and Mary Oleson as its original owners and connects the house with his medical career. In 1901, The Alkaloidal Clinic recommended his book to a reader seeking information about the ingredients of patent medicines.
Opening the proprietary medicine cabinet
The held copy of Secret Nostrums and Systems of Medicine is the fifth edition, revised and enlarged, published by Oleson & Co. in Chicago in 1894. Its original preface is dated December 1889. Oleson describes his task as collecting formulas and methods already published in medical and pharmaceutical journals and arranging them for convenient reference. He expressly declines to guarantee the accuracy of the analyses, offering their sources instead.

