From collection Candidates
![Hendrickson, Mary A. K.](https://cdn1.historyit.com/iiif/2/5edfd98ccc4f69.54593064/65428dc980c977.99155819.png/full/360,/0/default.jpg?no_errors=1)
Mary A. K. Hendrickson was a candidate for County Superintendent of Public Schools in Sherman County, Nebraska in 1918. In 1911 Hendrickson was elected president of the Sherman County Medical Society. Hendrickson also received a patent for an envelope sealer in 1920.