Dentist Dr. Carl Joseph (C. J.) Mittun, of Fosston, Minnesota, wrote a prescription for mosquito repellant, containing oil of citronella, oil of eucalytpus, menthol and alcohol, to be filled at Mark's Drug Store.
Ellingson Brothers General Merchandise, of Highlanding, Minnesota placed an order on June 3, 1910 with the P. M. Mark Medicine Company for a variety of items, include Hoffman Drops, Carbolic Acid, Castor Oil, Japanese Oil and Insect Powder.